The all-new Mari Alpine Trail series is the boldest and most capable line of Marin 's enduro bikes ever, built upon our most advanced, most adjustable frames to date. Series 4 aluminum MultiTrac 2 LT frames feature mixed 29”/27.5” wheels, 170mm front and 160mm rear travel, and the utmost in adjustability. Riders can alter the head tube angle and bottom bracket/chainstay length, as well as run 29” rear wheels if desired. “Bear Box” downtube storage includes a zippered nylon bag to house trail essentials, and a 34.9mm seatpost increases strength and is compatible with the latest dropper posts. While the Alpine Trail 1 is the starting point in the three-model lineup, Marin didn’t make any concessions regarding the spec. High-performance Fox suspension keeps you in control, while a Shimano Deore 12-speed drivetrain transmits your power to the wheel. TRP’s Slate Evo 4-piston brakes feature 203mm rotors, keeping all that speed in check in a powerful, fade-free manner. Product Marin Alpine Trail 1 Bike Model Year 2024 Riding Type Enduro / All-Mountain Freeride / Bike Park Rider Unisex Sizes and Geometry SM (high/short, low/long) MD (high/short, low/long) LG (high/short, low/long) XL (high/short, low/long) Wheel Size 27.5" (650b) 29" Other: Mullet Frame Material Aluminum Frame Material Details Series 4 6061 alloy; molded chainstay, seatstay, and down tube protection; integrated mudflap at lower rear suspension pivot Rear Travel 160mm Rear Shock FOX FLOAT Performance, custom tune, trunnion mount, 205mm x 65mm Fork FOX FLOAT 36 Rhythm, GRIP damper, 44mm offset, Kabolt thru-axle Fork Travel 170mm Head Tube Diameter Tapered, 1.125" top, 1.5" bottom Headset FSA, custom modular cups for adjustable head tube angle Handlebar Marin Mini-Riser, 6061 double-butted aluminum, 780mm width, 28mm rise, 5° upsweep, 9° backsweep Stem Marin, 3D-forged alloy, 35mm length Grips Marin Grizzly, lock-on Brakes TRP Slate EVO, 4-piston, resin pads, 203mm rotors Brake Levers TRP Slate EVO Drivetrain 1x Shifters Shimano Deore M6100, 12-speed Front Derailleur None Rear Derailleur Shimano Deore M6100, 12-speed, SGS cage ISCG Tabs ISCG05 Chainguide None Cranks FSA Comet Heavy Duty, modular 1x Chainrings FSA MegaTooth, 32 tooth, direct mount Bottom Bracket FSA MegaEXO, 73mm English/BSA threaded Pedals None Chain KMC X-12, 12-speed Cassette Shimano Deore M6100, 12-speed, 10-51 tooth Rims Marin, double wall alloy, 29mm inner width, pinned joint, 32 hole, tubeless compatible Hubs Shimano TC500, 15mm x 110mm (Boost) front, 12mm x 148mm (Boost) rear with MICRO SPLINE driver Spokes 14g stainless steel Tires VEE Tire Co. Snap WCE, Top 40 compound, Enduro Core, 90 TPI, tubeless compatible, 2.6" Saddle Marin Speed Concept Seatpost TranzX YSP39 dropper Drop: 150mm (SM), 170mm (MD/LG), 200mm (XL) Seatpost Diameter 34.9mm Seatpost Clamp Single bolt Rear Dropout / Hub Dimensions 12mm x 148mm (Boost) Max. Tire Size Bottle Cage Mounts One inside front triangle, plus accessory mounts under top tube Colors Gloss Brown/Blue/Light Blue Warranty 5 years frame; 1 year components, paint and decals Weight Miscellaneous • MultiTrac 2 LT four-bar Horst Link rear suspension design • Mixed ("Mullet") wheels: 29" front, 27.5" rear • Compatible with 29" rear wheels via flip chips in seatstays • Geometry adjustable via flip chips in chainstay pivots: high bottom bracket/short chainstay, or low bottom bracket/long chainstay configurations • Geometry adjustable via modular headset cups; 0° and +/-0.75° cups included • Bear Box integrated down tube storage with weather-sealed lid gasket; includes a zippered nylon bag to house trail essentials • Full internal cable routing with sealed cable/hose ports • SRAM UDH (Universal Derailleur Hanger)