Forks

Whisky poured over every detail, pushed the limits and broke new ground during the creation of the No.9 Rigid Carbon Mountain Bike Fork. It eliminates uncomfortable chatter and vibration over rough sections for an astoundingly plush ride. The delightfully stiff and compliant UD carbon fiber construction, tapered steerer, and 15mm thru-axle ensure minimal weight and precise handling. It all results in an enhanced riding experience and adds up to performance that you can count on. - Custom DT RWS Skewer included - 3.0" max recommended tire size - Axle to Crown Length: 480mm - Brake Mount: IS Disc Brake 160mm - Crown Race: 40 - Defined Color: Black - Front Axle: 15 x 100mm - Offset: 51mm - S.H.I.S. Stem Clamp Diameter: 28.6 - Steerer Type: Tapered - Weight: 750 grams - Wheel Size: 29-inch

For carving XC courses, going the distance on gravel roads, or roaming along bikepacking routes, the Whisky No.9 MTN Boost Fork brings a new dimension to your mountain bike. Lighter and stiffer than a suspension fork, it’s long enough to replace forks with 120mm to 130mm of travel. The boost 110mm spacing means your current wheels will likely bolt right in, and clearance for up to a 29 x 3.0" or 27.5 x 3.0" tire lets you alter your setup for wherever you’re riding. The Three-Pack mounts handily hold extra water, camping gear, tools, tubes, and more. - 15mm thru-axle with 110mm Boost spacing - Post-style brake mount - 1.5" tapered carbon steerer - Two sets of Three-Pack mounts - ASTM Condition 3 - For rough off-road riding and jumps less than 24"

ENVE's Road Fork is the fork by which all others are judged, built for road cyclists looking for the optimal balance of weight, strength, and stiffness. When everyone was turning away from the fork aftermarket, we focused our efforts on creating the best aftermarket fork we could. By following our mantra of functional simplicity, we developed a manufacturing process that allows the fibers in an ENVE fork to run continuously from the top of the steerer to the bottom of the drop-outs. The ENVE forks feature a hollow one-piece design free of bonding or drilling, and the brake bolt hole is molded into the crown, allowing for additional weight savings and strength. You can literally put an ENVE fork on a bike within minutes of it leaving the mold. While this manner of construction is novel, the real win is that the majority of artisan frame builders and customers choose ENVE as their fork of choice due to its confident on-road performance and handling characteristics.

A purpose built carbon fiber fork for gravel and cyclocross applications featuring internal hose routing, flat mount brake compatibility, and clearance for up to 50mm tires. This fork is perfect for gravel riders looking for more clearance, weight savings, compliance, and the versatility of fender mounts to enhance their gravel grinding experience. - Material: Carbon - Weight: 520g - Steer Tube Length: 350mm - Rake: 50mm - Axle To Crown: 395mm - Max Rotor Size: 140mm – 160mm - Max Tire Clearance: 700c x 50c, 27.5 x 2.25-inch - Crown Race Diameter: 1.5-inch - Torque Spec - Steer Tube: 5.5Nm - Torque Spec - Axle: 8Nm

Origin-8's Cromo-Lite Combo Mountain Fork is seriously versatile. This 4130 chromoly steel fork can be used with 26- or 29-inch wheels, and is suspension corrected for a 100mm 26-inch-wheel fork. With disc mounts and linear-pull brake bosses, even your brake choices are versatile.

With bigger bikes there comes bigger demands. Thankfully, we created the 35 Gold to meet all of them, both in performance and value. Whether you have an E-MTB or MTB, the burly 35 Gold checks the box with our proven DebonAir spring and Motion Control damping. And new this year is an E-MTB-focused option with mounting points for optional full or short fenders. All told, you might wonder how we packed so much quality and performance into such a wallet-friendly package. Features - New E-MTB endorsement options with fender mounts are appropriate for all E-bikes (1.8" taper available) - New graphics are easy to read and make a fresh impact - Motion Control damping featuring low-speed compression adjustment to lockout - Highly tunable DebonAir spring offers a consistent feel throughout the travel - Fits Tires up to 2.8" (without fenders; the use of a full fender will reduce tire clearance) - Fast Black finished 35mm aluminum upper tubes couple stiffness and lightweight with a premium look - Offset: 44mm

- Protective neoprene and velcro cut-To-Fit boot fits most rear shocks

Premium performance at down-to-earth prices. Judy now includes all of the 30mm MTB and E-MTB forks, with axle and steerer options to match any spec. Silver level forks give you stiff steel upper tubes and TurnKey lockout. Features - New graphics package with E-MTB endorsement option (15x110mm) - TurnKey lockout gives 'on/off' control - Fits Tires up to 2.8" (15x110mm) - Fast Black finished 30mm steel upper tubes couple stiffness and lightweight with a premium look - Plush, highly tunable Solo Air spring - Disc brake compatible - Offset: 51mm (29-inches) - Steerer Diameter: 1.5-inch Tapered

All Box One forks are engineered and crafted using our Oversized Technology. These forks are the single most important component in the quest for bike control. We’ve moved carbon from areas of low stress to areas that handle high load. Those muscular shoulders aren’t just for looks as they are integral to achieving superior steering stiffness. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: This particular model fork is tailored for larger-sized racers and therefore includes a lightweight 1-1/8 inch 7000 series aluminum steerer tube and 10mm cold-forged dropouts. Weight Limit: 115kg (253 lbs) with limitations as per Category 2 of EN 16054:2012 Standard FEATURES - 1-1/8 Inch 7000 Series Aluminum Steerer Tube - Standard Size Fork for Larger-Sized Racers - Internal Butterfly Steerer Tube and Fork Crown Interface - 10mm Standard Dropouts - Cold-Forged and Bonded Dropouts COMPATIBILITY - Box Two 1.1/8" Integrated Headset - Box One Carbon 45x45 1.1/8" Integrated Headset - Box Two Threadless Headset - Box Two Headset Spacers - Box One Front Load Stem - Box One Top Load Stem - Box Two Front Load Stem - Box Two Top Load Stem - Box One Delta Stem - Box One Center Clamp Stem - Box Two Center Clamp Stem SPECIFICATIONS - 20 Inch 24 Inch - Material High Modulus Unidirectional Carbon Fiber Construction - Steerer Material 7000 Series Aluminum - Finish High Gloss Black - Offset 32mm - Steerer Tube 1-1/8 Inch - Weight - 20": 560g / 19.75oz - 24": 585g / 20.7oz

Whisky poured over every detail, pushed the limits, and broke new ground during the creation of the No.9 Fat Rigid Carbon Mountain Bike Fork. It eliminates uncomfortable chatter and vibration over rough terrain, so you experience an astoundingly plush ride with precise handling. They've accomplished this by using a delightfully stiff and compliant UD carbon fiber construction, a tapered steerer, and a 15 x 150mm thru-axle. It all results in an enhanced riding experience and adds up to performance that you can count on. - Post style brake mount - DT RWS Axle included - UD full carbon construction - Axle to Crown Length: 480mm - Brake Mount: Post Mount 160mm - Crown Race: 40 - Front Axle: 15 x 150mm - Material: Carbon - Offset: 51mm - S.H.I.S. Stem Clamp Diameter: 28.6 - Steerer Type: 1-1/8 – 1-1/2-inch tapered - Weight: 750 grams - Wheel Size: 26-inch

Odyssey's 41-Thermal forks quickly established a reputation for strength and quality when originally introduced in 1999, and they have since gone on to change the standards that all forks are judged by. Features: - Fully redesigned - Laboratory tested and team proven - New, custom, seamless, tapered, butted and specially formed leg tube shaping for improved grind and guard clearance - All-new steerer tube design improves fatigue strength and includes a built-in, integrated, lower headset seat race - New, optimized, 4mm dropout shape for grind and peg clearance - Updated 7075-T6 pre-load bolt, US Pat. No. 7,591,474 - Proven 41-Thermal processed 4130 chromoly - Legendary lifetime replacement warranty Specs: - 25mm steep offset - 3/8-inch axle slots only - 990 brake mounts - Starting at 2lb 2oz (912 grams)

With a FLOAT EVOL air spring and on-the-fly compression adjustability, 32 Taper-Cast Factory delivers just enough tunable travel to take the edge off of wherever your gravel adventures may lead you. - 700c chassis with clearance for large volume tires (50 mm max) - Kashima Coated 7000 series aluminum stanchions and 12x100mm bolt-on thru axle - FLOAT EVOL Air Spring and FIT 4 damper, featuring three on-the-fly settings - Open, Medium, and Firm - Lightweight air spring optimized for short-travel - Lightweight 32mm Step-Cast chassis with Lower Leg Air/Oil Bypass Channels - Integrated full fender mounts (700c x 45 mm max with fender)

The one-piece carbon monocoque WCS Carbon Disc Road Fork has been meticulously engineered and painstakingly built to perform with razor-sharp accuracy, offering a comfortable yet lively riding experience. Built with High Modulus Fiber (HMF), this impeccable road fork offers superior strength and a superb road feel. Smooth internal fiber flow in the crown/steerer area delivers the best force transfer from crown to shaft and increased impact strength. The orientation of the fibers has been optimized to absorb and dissipate loads, which delivers a confident and comfortable ride. The fork also uses various fiber types based on their specific properties to manage different load types as well as possible in the areas in which they occur—such as side load, torsion, and impact. The WCS Carbon Disc Road Fork features a 46mm rake and includes a compression plug. Welcoming flat-mount disc calipers, this fork also fits up to 30mm tires, depending on tire make and model. - Material: carbon fiber - 1-1/8" straight steerer with integrated 45-degree crown race - Fits 1-1/8 and 44mm headtubes with appropriate headsets - 100x12mm thru-axle (included) - Flat Mount disc brake - Disc brake rotor compatibility: 140 / 160mm - Steerer length: 300mm - Crown diameter: 46mm - Axle-Crown: 371mm - Rake/Offset: 46mm - Spacing: 40mm - Minimum tire clearance: 4mm - Wheel compatibility: 700c - Weight: 390g (with uncut steerer / not including axle)

Tom Ritchey was riding off-road decades before gravel riding was ever a "thing," and the new WCS Carbon Cross Gravel Fork is the manifestation of the experiences enjoyed on all of those dirty rides mixed with the legendary engineering for which Ritchey is famous. Built from life and ready for your drop bar off-road adventures, this full monocoque carbon fork delivers precision and confidence while offering stability and comfort along some of the more rugged terrain you'll encounter. With logical features—like enough room tires up to 40mm wide, the ability to run 12 or 15mm thru-axles, and ability to run flat-mount disc brakes—the Ritchey WCS Cross Gravel Fork is ideal for long-distance gravel events, your local cyclocross series, spontaneous weekend adventures, and everything in between. - Material: carbon fiber - 1-1/8" straight steerer with integrated 45-degree crown race - Fits 1-1/8 and 44mm headtubes with appropriate headsets - 100x12mm thru-axle (included) - Flat Mount disc brake - Disc brake rotor compatibility: 140 / 160mm - Steerer length: 300mm - Crown diameter: 47mm - Axle-Crown: 383mm - Rake/Offset: 47mm - Spacing: 53mm - Minimum tire clearance: 6mm - Wheel compatibility: 700c - Weight: 430g (with uncut steerer / not including axle)

An entry level fork with the latest features and performance; Judy Silver is built around a brand new chassis derived from the Pike, works with Plus tires up to 2.8 in both the 27.5" and 29" models. Judy Silver features the Motion Control RL damper and is compatible with OneLoc remotes and has Fast Black upper tubes for an all-black look and low friction performance. - 80-120mm travel - External rebound - TurnKey lockout controls - Fast Black upper tubes - Motion Control RL damper - Compatible with OneLoc remote

- 38mm chassis for increased stiffness and rider confidence - ButterCups block 20% of high frequency "trail chatter". Limiting these vibrations massively reduces hand and arm fatigue leaving you feeling fresh with more control. - Charger 3 features a completely new Internal Floating Piston (IFP) design with better fidelity, performance and truly independent adjustments without any "cross talk". - DebonAir+ is built to strike the perfect balance of what riders really want: butter-like small bump feel, increased air volume, and higher overall ride height. - Ultimate Bushing Package maximizes the fork's bushing overlap, reducing friction and creating the smoothest ride possible - Pressure Relief Valves eliminate unwanted air pressure build up in the lower leg caused by variations in altitude or temperature - Includes premium short fender

The ultimate aftermarket disc brake specific road cycling fork featuring 32mm of tire clearance and solid 12mm thru-axle for secure and confident handling. Building upon nearly a decade of experience making the world's best forks, ENVE's latest road disc fork features a modern 32mm of tire clearance, a low axle-to-crown height of 370mm, internal hose routing, and a lightweight one-piece form construction developed specifically to handle the demands of disc brakes, rough roads, and large volume tires. - Material: Carbon Fiber - Steerer Tube Length: 350mm - Rake: 43, 50mm - Axle to Crown: 370mm - Brake: Disc - Axle Compatibility: 12mm - Max Rotor Size: 160mm - Max Tire Clearance: 32mm - Crown Race Diameter: 1.25 - Torque Spec: Steer Tube: 5Nm - Torque Spec: Axle: 8Nm - Weight: 425g

Own the mountain with the award-winning 36 Factory, featuring high- and low-speed rebound adjuster, improved compression damping and reduced friction for unmatched performance and adjustability. - Genuine Kashima Coating on upper tubes - FIT damper and FLOAT EVOL air spring - Low friction seals for improved performance - Lower Leg Bleeders and Bypass Channels - Floating axles for perfect alignment

Own the mountain with the award-winning 36 Factory, featuring high- and low-speed rebound adjuster, improved compression damping and reduced friction for unmatched performance and adjustability. - Genuine Kashima Coating on upper tubes - FIT damper and FLOAT EVOL air spring - Low friction seals for improved performance - Lower Leg Bleeders and Bypass Channels - Floating axles for perfect alignment

FOX 38 Factory Series Suspension Fork is the long-travel enduro specialist. It redefines what you think a long travel single crown fork is capable of, and sets a new benchmark for confidence, performance, and durability. - The floating axle offers a distinct performance advantage due to its unique ability to match the exact width of the fork’s wheel mounting surface precisely to the front hub flange spacing, thus creating perfect chassis alignment and eliminating unwanted friction between the upper and lower fork legs - Floating axles provide much smoother suspension movement throughout the entire range of the fork’s travel, notably improving sensitivity and overall ride quality - The 38 Fork comes equipped with a quick-release lever operated patent-pending floating axle system, combining the benefit of a floating axle with the ease of a tool-free quick-release - Lower leg bypass channels alleviates air pressure by dramatically increasing air volume within the lower legs and thereby reducing the amount of additional unintended pressure ramping - Lower leg bleeders allow for atmospheric pressure equalization at the simple press of a button - The 38's lower leg arch design pulls out all the stops, shaving every possible gram while making sure not to compromise stiffness or strength requirements of modern enduro and gravity style riding

Service your suspension fork with Enduro Seal KIts. - Custom made for each make and model of fork

Get Inverted. Back and better than ever the new Dorado Expert is ready to take on the gnarliest conditions mountain biking can provide. Whether you’re looking to cut seconds off the splits, lap the local park, or get sendy in the back hills of Utah the Dorado Expert has you covered. Featuring an all-new 37mm chassis, completely redesigned internals, and on-trail precision that only inverted forks can provide the new Dorado is your ticket to the best ride you’ve ever had. Key Features: - New 37mm chassis results in a massive increase in stiffness and ride quality. The new chassis is 20% stiffer compared to our former 36mm version - Inverted Design provides an incredibly smooth and consistent feel due to constant lubrication of the bushings and seals. The inverted design also provides a major increase in fore-aft stiffness compared to traditional forks while maintaining torsional compliance which provides more control to the rider over rough terrain. - The Dorado Air Spring system contains a unique balancing valve that equalizes the positive and negative air chambers during the air-fill process resulting in a consistent feel without any flat or dead spots. It also allows easy Travel Adjustability from 180 to 190 and 203mm without the need for any spare parts. - IVA (Incremental Volume Adjust) modifies the volume in the positive air chamber with self-contained spacers dictating the position of the IVA piston and your volume amount. - The new TPC+ Damper has increased oil volume and improved flow paths for improved bump compliance and increased consistency. TPC+ features two compression pistons, a hydraulic bottom out, and a spring-backed IFP for a smooth and predictable feel for every impact. Adjustments include; High-speed compression, Low-speed compression, and Low-speed rebound. - Fits both 29" and 27.5" wheels. Markings on the outer legs indicate the proper clamping point for ideal axle-to-crown measurements depending on wheel size. The fork legs can be used with both wheel sizes. - Two Crown Options are available with this fork. The 47 offset is designed to work with 27.5" wheels and intended axle to crown. The 57 offset crown is designed for 29" wheels and axle to crown. For those looking to run the lower offset crown with 29" wheels please reference our fit document to see if your headtube length is compatible. - TSR Bleed Screws allow you to release excess pressures built up in the outer legs of your fork while riding keeping your fork smooth and supple all day long. Product Details: - 37mm 6000 Series Aluminum stanchions with carbon fiber legs - Externally Adjustable: high-speed compression, low-speed compression, and rebound - Dorado air spring with IRT (Infinite Rate Tune) volume adjuster allows the rider to adjust mid-stroke support and bottom-out progressivity independent of initial spring rate - TPC+ Damper with HBO (Hydraulic Bottom Out) - TSR Bleeders - Includes removable bolt-on fender

All Box One forks are engineered and crafted using our Oversized Technology. These forks are the most important component in the quest for bike control. We’ve moved carbon from areas of low stress to areas that handle high loads. Those muscular shoulders aren’t just for looks as they are integral to achieving superior steering stiffness. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: This particular model fork is tailored for larger-sized racers. It also takes our application of Oversized Technology one step further as it includes a tougher 1-1/8 inch chromoly steerer tube and stiffer 20mm through-axle cold-forged dropouts. Weight Limit: 115kg (253 lbs) with limitations per Category 2 of EN 16054:2012 Standard. FEATURES - Oversized Technology™ - Chromoly Steel Steerer Tube to Accommodate Larger-Sized Racers - 20mm Through Axle to Increase Responsiveness - Internal Butterfly for Added Durability at Steerer Tube and Fork Crown Interface

All Box One forks are engineered and crafted using our Oversized Technology. These forks are the single most important component in the quest for bike control. We’ve moved carbon from areas of low stress to areas that handle high loads. Those muscular shoulders aren’t just for looks as they are integral to achieving superior steering stiffness. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: This particular model fork pushes our Oversized Technology to the extreme as it includes the 1.5 to 1-1/8 inch tapered 7000 series aluminum steerer tube and stiffer 20mm through-axle cold-forged dropouts. Say goodbye to deflection. Weight Limit: 115kg (253 lbs) with limitations as per Category 2 of EN 16054:2012 Standard FEATURES - Oversized Technology™ - Tapered Steerer Tube to Reduce Deflection - 20mm Through Axle to Increase Responsiveness - Internal Butterfly for Added Durability at Steerer Tube and Fork Crown Interface

The No.9 CX Flat Mount fork is a light-weight, forward-compatible front-end upgrade, ideal for cyclocross, gravel, or commuting. Featuring the flat mount disc brake standard, easy fender mounts and 12mm thru-axle dropouts to create a refined, clean design that trims considerable weight over previous versions. The fork provides big tire clearance, precise handling and tracking capabilities, and a comfortable ride quality that Whisky forks are known for. - 12mm thru-axle, 100mm spacing - Designed for flat mount disc brakes - Hidden, removable fender mounts - 42mm max recommended tire size - ASTM Condition 2 - For off-road riding and jumps less than 12-inches - Includes thru-axle and Whisky Parts Co. compression plug

Own the mountain with the award-winning 36 Factory, featuring high- and low-speed rebound adjuster, improved compression damping and reduced friction for unmatched performance and adjustability. - Genuine Kashima Coating on upper tubes - FIT damper and FLOAT EVOL air spring - Low friction seals for improved performance - Lower Leg Bleeders and Bypass Channels - Floating axles for perfect alignment - Updated Crown Design saves up to 20 grams, and offers significant structural improvements

A carbon fork designed for bikepacking and endless exploration. Experience easier carrying of all possible accessories for everything from overnight endeavors to epic self-supported excursions with the ENVE Adventure Fork. The ENVE Adventure fork provides a lighter weight option for bikepackers and frame builders, while still maintaining reliability and strength. The dynamo light and charger routing is an integrated and protected solution to self-supported bike riders' needs. Finally, the fork chip option gives builders versatility in the fork by adjusting the axle-to-crown for different bike geometries for alternative bikepacking methods. In a market that's filled with heavy steel fork options, the ENVE Adventure fork offers bikepackers an opportunity to lighten their overall bike load through our trusted carbon fiber fork expertise. - Three-Pack Accessory Mounts - Fender and Rack Mounts - Reversible Drop-Out Chips for Adjustable Axle-To-Crown and Rake - Internal Dynamo Routing for Lights and Electronics Charging - Axle Spacing 12 x 100mm - Compatible Rotor Sizes 140mm & 160mm - 700 x 50mm Tire Clearance

The fork you need. GENUINE REPLACEMENT PARTS Get back on the road with a genuine replacement fork. PRODUCT DETAILS - Original replacement fork - Color matched for direct compatibility

The award-winning 36 with FIT4 adjustable damper features patent-pending Variable Valve Control (VVC) high- and low-speed rebound adjuster, improved compression damping, and less friction overall. With all this and the legendary Fox feel, the 36 offers a level of performance and adjustability sought by today's riders. "Factory" says it all. The best-of-the-best technology we have to offer is available in our Factory Series models with our buttery smooth and ultra durable Genuine Kashima Coat. These products are World Cup proven. Buttery smooth Kashima's distinctive gold color is backed by its high performance attributes—properties that provide an exceptionally smooth feel and extreme durability. EVOL — Air Transfer Port System Our EVOL linear spring curve gives forks and shocks plushness off the top, extra mid-stroke support, and more tunable bottom-out progression, allowing riders to tap into the ideal pairing of front and rear-end feel. FLOAT EVOL Air Spring EVOL technology from rear shocks is integrated into all FOX forks. EVOL increases negative air spring volume, specifically positioned and sized for optimum small bump sensitivity.

The new Mattoc is the fruit of one of the most profound development cycles in Manitou history. It is the physical embodiment of “great things take time”. It is not an offering that follows the crowd, designed around the latest trend or buzz of the market. Rather, a component that aims to add real value and benefit to the rider. Capable of not only pulling duty in a range of disciplines ranging from XC to light enduro but doing so with zero compromise makes the Mattoc “best-in-class” ! The lightest, stiffest, and most tunable fork over more segments than any of its competitors, the Mattoc PRO is an amazingly versatile product capable of vastly improving your time in the saddle. At 1750 grams it is a featherweight solution given its wide travel range, yet its industry-leading stiffness lends it to a performance without rival. Consider also its amazing reliability and you have a fork that does it all and does it amazingly. A true, no-compromise, authentic fork, serving the real needs of the widest range of the mtb public and offering serious performance advantages to each individual one of them, no matter how they choose to ride. The Dorado Air spring with IRT allows for an extremely lightweight build yet a suspension performance derived from our top-of-the-line DH fork. Compression damping via MC2 Sealed Cartridge with HBO technology and a sealed damper TPC for rebound, and you’ve got yourself an extremely sophisticated piece of suspension technology. Adjustable Air, IRT, Rebound, High and Low-Speed compression make for perhaps the most tunable, personalized custom performance suspension solution available on the market. Include all of this technology into an extremely stiff, reliable, 1750 gram package and you have a ride-changing component that is the envy of the industry Key Features: - 59 grams decrease from the previous model. - Over 19% stiffness increase from the current 27.5” 160mm to the new 27.5” 150mm. 29” Stiffness increases are higher. - DoradoTM air allows for internal travel adjustments with no added parts. New travel spacers account for negative air volume change, so the 110mm fork has the same initial stroke feel as the 150mm. - Dorado Air spring systems contain a unique balancing valve that equalizes the positive and negative air chambers during the air fill process. This gives the spring rate a consistent feel without any flat or dead spots in the stroke, along with giving riders of different weights the same initial stroke feel. Dorado Air is our lightest-weight air spring technology. - Infinite Rate TuneTM (IRT) allows for advanced spring tuning by independently adjusting air pressures in the beginning and end stroke. IRT technology creates a secondary positive air spring that affects only the middle-to-end stroke of the fork. This allows the main air spring to be set to lower pressures for improved small bump sensitivity while maintaining mid-stroke support and moderate to aggressive end-stroke ramp-up. - Sealed Dampers offer more consistent damping and lighter breakaway force, especially over long descents. Our Damper uses a bladder system to compensate for head build-up along with a relief valve. Using both systems gives us consistency along with a long service life. Having non-adjustable HBO eases setup for the user. - TSR (Trail Side Relief) casting bleed screws allow users to release casting pressure from the fork. Releasing casting pressure can improve overall fork feel and small bump compliance.