A little over a moth ago, we finally found out what that odd bulge was on the bottom of the new RockShox Boxxer. Part of a complete redesign with all kinds of kitschy marketing names, if ButterWagonTech doesnt give it away, the goal is all about making things smooth and controlled. Now, that same tech is coming for RockShox trail forks with LinearXL versions of the Lyrik and Zeb. The LinearXL air spring system is meant to deliver coil-like performance characteristics in air-sprung mountain bike forks. The technology features redesigned lower legs and a new air spring configuration that provides what RockShox describes as suppleness at the beginning of travel, mid-stroke support, and controlled bottom-out resistance. The system requires higher air pressures than traditional designs due to engineering changes that include a twin-tube design, reduced piston diameter, and an enlarged 14mm hollow air spring shaft.That bump on the bottom of the fork leg is also part of the LinearXL system, and its called the Air Annex. It essentially increased the lower leg air volume for reduced progressively and speed sensitivity. Like the Boxxer, the new Zeb and Lyrik also gain stanchion breather holes which claim to allow the lower leg air volume to actually increase and the fork goes through the travel.The LinearXL system pairs specifically with the new Charger 3.2 damper, which features speed-sensitive damping with independent high and low speed compression damping, and adjustable rebound damping. Adjustable Bottom Out (ABO) control allows riders to customize end-stroke support (with a tool) independently of the main air spring curve.The updated forks incorporate ButterWagonTech, an internal oil distribution system with divots that capture and redistribute the high density Maxima lower leg oil to maintain bushing lubrication. This combined with new lower friction seals from SKF should result in buttery smooth travel.Along with ButterWagonTech, youll also find ButterCups which seem to be RockShox take on a tuned mass damper inside the fork legs. ButterCups are said to isolate the air spring and damper shafts from chatter, cutting high-frequency vibration by up to 20%.RockShox fork adapter spacers to make installation of non-TorqueCap hubs easierRockShox is continuing its crusade for stiffer hub/fork connections with their TorqueCap dropouts. As a refresher, these dropouts use the same 15mm axle size, but have a larger end cap for the hub that results in more contact area with the fork. The catch is that it makes installing non-TorqueCap hubs a bit trickier, so forks should include small plastic spacers that bolt into the dropout when not using a TorqueCap hub. Both forks also see stiffness gains thanks to a wider fork crown. Additional post-forging machining removes excess weight.Perhaps one of the more interesting features is the new lower arch and integrated fender options. Instead of mounting underneath or behind the arch, the fenders now bolt directly overtop the arch offering full tire clearance (and protection of the fork seals). When not in use, a small plastic cover is bolted to the arch to conceal the mounting point. Weve only seen the small half fender so far, but the press kit mentions a full or half fender as an option.The ZEB B1 and Lyrik E1 models should be widely available starting April 2026. Note that if you want the new tech, you should buy an equipped fork up front base-level models cannot be upgraded to Ultimate specifications due to component incompatibility.Lyrik & Zeb ModelsLYRIK ULTIMATE FLIGHT ATTENDANTFeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by Adjustable Bottom Out (ABO) for end-stroke controlNEW ButterWagonTech ensures a constant supply of oil to the bushings, reducing friction and maintaining smooth performance throughout the entire service intervalNEW Flight Attendant Charger 3.2 damper provides riders with efficiency and control and achieves virtually silent performance, keeping riders focused on the trailNEW Integrated fender mount (Lyrik Integrated Fender sold separately)NEW Graphics packageminimalist design, maximum impactButterCups technology block 20% of high-frequency trail chatter to reduce hand and arm fatigueFlight Attendant is the only automatic suspension system that listens to you and the trail, adapting in real time for smarter, more personalized efficiency and speedfully wireless, AXS-enabled, and seamlessly integrated to disappear into your rideLow-grab SKF wiper seals deliver long-lasting fork performance and a smoother rideMaxima 920 blended 15w reduces overall fork frictionAvailable in Electric Red or Ultimate High Gloss Black Signature colorwaysDAMPER: Charger 3.2 Flight Attendant w/ButterCupsSPRING: Linear XL w/ButterCupTRAVEL: 140mm, 150mm, 160mm, 170mmFORK OFFSET: 37mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: $ 1,699LYRIK ULTIMATEFeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by Adjustable Bottom Out (ABO) for end-stroke controlNEW ButterWagonTech ensures a constant supply of oil to the bushings, reducing friction and maintaining smooth performance throughout the entire service intervalNEW Charger 3.2 damper with new Rebound/Compression tunes that match LinearXL air spring, achieves virtually silent performance, keeping riders focused on the trailNEW Control bezel with numbered Compression adjuster for intuitive adjustmentsstart at 0 and easily add or decrease dampingNEW Integrated fender mount (Lyrik Integrated Fender sold separately)NEW Graphics packageminimalist design, maximum impactButterCups technology block 20% of high-frequency trail chatter to reduce hand and arm fatigueLow-grab SKF wiper seals deliver long-lasting fork performance and a smoother rideMaxima 920 blended 15w reduces overall fork frictionDAMPER: Charger 3.2 RC2 w/ ButtercupsSPRING: Linear XL w/ ButtercupTRAVEL: 140mm, 150mm, 160mm, 170mmFORK OFFSET: 37mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: $ 1,259LYRIK SELECT+FeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by Adjustable Bottom Out (ABO) for end-stroke controlNEW Charger 3.2 damper with new Rebound/Compression tunes that match LinearXL air spring, achieves virtually silent performance, keeping riders focused on the trailNEW Control bezel with numbered Compression adjuster for intuitive adjustmentsstart at 0 and easily add or decrease dampingNEW Integrated fender mount (Lyrik Integrated Fender sold separately)Low-grab SKF wiper seals deliver long-lasting fork performance and a smoother ride Maxima SG920 blended 15w reduces overall fork frictionDAMPER: Charger 3.2 RC2SPRING: Linear XLTRAVEL: 140mm, 150mm, 160mm, 170mmFORK OFFSET: 37mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: Not available AMLYRIK SELECTFeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by a fixed bottom-out system for end-stroke controlNEW Delta RC damper with easy-toadjust Compression and independent Rebound features intuitive controls and virtually silent performance, keeping riders focused on the trailNEW Integrated fender mount (Lyrik Integrated Fender sold separately)Low-grab SKF wiper seals deliver long-lasting fork performance and a smoother rideMaxima 920 blended 15w reduces overall fork frictionDAMPER: Delta RCSPRING: Linear XLTRAVEL: 140mm, 150mm, 160mm, 170mmFORK OFFSET: 37mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: $ 929LYRIKFeaturesNEW Delta RC damper with easy-toadjust Compression and independent Rebound features intuitive controls and virtually silent performance, keeping riders focused on the trailDebonAir+ air spring strikes the perfect balance of small-bump sensitivity and mid-to-full travel support, giving riders confidence on rough terrainBolt-on short fender compatibility (Lyrik Fender sold separately)Maxima SG920 blended 15w reduces overall fork frictionDAMPER: Delta RCSPRING: Debonair+TRAVEL: 140mm, 150mm, 160mmFORK OFFSET: 37mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: Not available AMZEB ULTIMATE FLIGHT ATTENDANTFeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by Adjustable Bottom Out (ABO) for end-stroke controlNEW ButterWagonTech ensures a constant supply of oil to the bushings, reducing friction and maintaining smooth performance throughout the entire service intervalNEW Flight Attendant Charger 3.2 damper provides riders with efficiency and control and achieves virtually silent performance, keeping riders focused on the trailNEW Integrated short fender mount (ZEB Integrated Fender sold separately)NEW Graphics package minimalist design, maximum impactFlight Attendant is the only automatic suspension system that listens to you and the trail, adapting in real time for smarter, more personalized efficiency and speedfully wireless, AXS-enabled, and seamlessly integrated to disappear into your rideButterCups technology block 20% of high-frequency trailchatter to reduce hand and arm fatigueLow-grab SKF wiper seals deliver long-lasting fork performance and a smoother rideMaxima 920 blended 15w reduces overall fork frictionAvailable in Electric Red or Ultimate High Gloss Black Signature colorwaysDAMPER: Charger 3.2 Flight Attendant w/ButterCupsSPRING: Linear XL w/ButterCupTRAVEL: 150mm, 160mm, 170mm, 180mmFORK OFFSET: 38mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: $1,799ZEB ULTIMATEFeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by Adjustable Bottom Out (ABO) for end-stroke controlNEW ButterWagonTech ensures a constant supply of oil to the bushings, reducing friction and maintaining smooth performance throughout the entire service intervalNEW Charger 3.2 damper with new Rebound/Compression tunes that match LinearXL air spring, achieves virtually silent performance, keeping riders focused on the trailNEW Control bezel with numbered Compression adjuster for intuitive adjustmentsstart at 0 and easily add or decrease dampingNEW Integrated short fender mount (ZEB Integrated Fender sold separately)NEW Graphics packageminimalist design, maximum impactButterCups technology block 20% of high-frequency trail chatter to reduce hand and arm fatigueLow-grab SKF wiper seals deliver long-lasting fork performance and a smoother rideMaxima 920 blended 15w reduces overall fork frictionAvailable in Electric Red or Ultimate High Gloss Black Signature colorwaysDAMPER: Charger 3.2 w/ ButtercupsSPRING: Linear XL w/ ButtercupTRAVEL: 150mm, 160mm, 170mm, 180mmFORK OFFSET: 38mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: $ 1,299ZEB SELECT+FeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by Adjustable Bottom Out (ABO) for end-stroke controlNEW Charger 3.2 damper with new Rebound/Compression tunes that match LinearXL air spring, achieves virtually silent performance, keeping riders focused on the trailNEW Control bezel with numbered Compression adjuster for intuitive adjustmentsstart at 0 and easily add or decrease dampingNEW Integrated short fender mount (ZEB Integrated Fender sold separately)Low-grab SKF wiper seals deliver long-lasting fork performance and a smoother rideMaxima SG920 blended 15w reduces overall fork frictionDAMPER: Charger 3.2 RC2SPRING: Linear XLTRAVEL: 150mm, 160mm, 170mm, 180mmFORK OFFSET: 38mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: Not available AMZEB SELECTFeaturesNEW LinearXL air spring delivers a consistent and predictable ride feel backed by affixed bottom-out system for end-stroke controlNEW Delta RC damper with easy-to-adjust Compression and independent Rebound features intuitive controls and virtually silent performance, keeping riders focused on the trailNEW Integrated short fender mount (ZEB Integrated Fender sold separately)Low-grab SKF wiper seals deliver long-lasting fork performance and a smoother rideMaxima 920 blended 15w reduces overall fork frictionDAMPER: Delta RCSPRING: Linear XLTRAVEL: 150mm, 160mm, 170mm, 180mmFORK OFFSET: 38mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: $ 989ZEBFeaturesNEW Delta RC damper with easy-to-adjust Compression and independent Rebound features intuitive controls and virtually silent performance, keeping riders focused on the trailDebonAir+ air spring strikes the perfect balance of small-bump sensitivity and mid-to-full travel support, giving riders confidence on rough terrainBolt-on short fender compatibility (ZEB Fender sold separately) Maxima SG920 blended 15w reduces overall fork frictionDAMPER: Delta RCSPRING: Debonair+TRAVEL: 150mm, 160mm, 170mm, 180mmFORK OFFSET: 38mm (27.5), 44mm (27.5), 44mm (29)WHEEL SIZE: 27.5, 29MSRP: Not available AMThe post RockShox ButterWagonTech Rolls in on New Lyrik & Zeb with LinearXL Air Springs appeared first on Bikerumor.