Big mountains, epic passes, and all day ripping descents. If you live for the alpine adventure and gravity-fueled downhills, look no further than the Alpine Trail series. Updated for 2021, and built around the longest travel version of our critically acclaimed MultiTrac platform with progressive slack headtube/steep seattube geometry, low-slung aluminum or carbon frames, and 29” wheels, the Alpine Trail is here to conquer all singletrack in its path.
WHEEL SIZE: 29"
SIZE RANGE: S, M, L, XL
UNIDIRECTIONAL CARBON FIBER FRAME
Alpine Trail Carbon 1 and 2 models feature high modulus carbon fiber and monocoque construction to deliver the strongest and stiffest Alpine Trail to date.
ONE PIECE FORGED ROCKER
The heart of the Alpine Trail’s MultiTrac suspension is the forged one-piece rocker link. The strength and stiffness of the rocker keeps the rear of the bike tracking straight, providing smooth suspension operation under the most demanding conditions.
SERIES 4 ALUMINUM FRAME
Alpine Trail models feature Series 4 aluminum frames, with detailed forgings, highly manipulated tubes, and full internal cable routing, giving the rider the highest-end alloy frame that Marin offers.
The stiffness of the one-piece rocker link allows for a bridgeless seatstay design, offering zero compromises on stiffness while at the same time allowing for maximum tire clearance and short chainstays.
The Alpine Trail has a slack 63.5º head tube angle paired with a steep 78º seat tube angle and long reach to provide the best modern trail bike experience. The bike lets you climb better than ever before, while giving you even more confidence when descending.
Looking for the perfect size? Checkout our handy quick reference chart below (NOTE: The chart assumes average limb and torso proportions). Not sure about your size? Just send us your measurements using our Bike Sizing form and one of our experts will help you out!
|Rider Height||Frame Size|
|5'3" to 5'6"||S|
|5'6" to 5'10"||M|
|5'10" to 6'2"||L|
|6'2" to 6'4"||XL|
|Frame||Series 4 6061 Aluminum Frame, 29" Wheels, 150mm Travel MultiTrac Suspension Platform, Internal Dropper Post and Rear Derailleur Routing, Chainstay Mounted Post Mount Disc Brake, 148x12mm Boost Thru- Axle, 73mm Threaded BB w/ ISCG05 Tabs|
|Front Suspension||RockShox Yari RC, 29", 160mm of Travel, Air Sprung, Debonair, Compression and Rebound Adjustment, Fast Black Stanchions, 110x15mm Maxle Stealth, 42mm Offset|
|Rear Suspension||Rock Shox Deluxe Select + RT, Debonair Air Spring, 2 Position Compression and Rebound Adjustment, 205x65mm, Trunnion Upper Mount, 25mmxM8 Lower Mount|
|Rim||Marin, Double Wall Alloy, 29mm Inner, Pinned Joint, Disc Specific, 32H, Tubeless Compatible|
|Hub Rear||Shimano HB-MT410B, 148x12mm, Centerlock, Microspline Freehub Body|
|Hub Front||Shimano HF-MT410B, 110x15mm, Centerlock|
|Spokes||14g Black Stainless Steel|
|Tires||Vee Tire Flow Snap, 29x2.6", Tackee Compound, 72 TPI, Tubeless Compatible|
|Derailleur Rear||Shimano Deore SGS, Shadow Plus, Direct Attachment, 12-Speed|
|Shift Lever||Shimano Deore, 12-Speed, SL-7100R|
|Crankset||FSA Comet Heavy Duty, Modular 1x, 32T Direct Mount Chainring, MegaTooth Technology, Boost Spacing|
|Bottom Bracket||External Sealed Cartridge Bearing|
|Chain||KMC X-12 Silver and Black|
|Cassette||Shimano, Deore 12-Speed, 10-51T|
|Brakes Front||Shimano MT420, 4-Piston Hydraulic Disc Brake, 203mm Rotor|
|Brakes Rear||Shimano MT420, 4-Piston Hydraulic Disc Brake, 180mm Rotor|
|Brake Levers||Shimano MT4100 Hydraulic Lever, I-Spec EV Compatible|
|Handlebar||Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back|
|Stem||Marin 3D Forged Alloy, 35mm|
|Grips||Marin Single Clamp Locking|
|Headset||FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2"|
|Seatpost||TranzX, YSP23JL, 1x Remote, Size S 125mm Travel, Size M and L 150mm Travel, Size XL 175mm Travel, 30.9mm|
|Saddle||Marin Speed Concept|
|Head Tube Angle||63.5||63.5||63.5||63.5|
|Head Tube Length (mm)||100||110||115||130|
|Seat Tube Angle||78||78||78||78|
|Seat Tube Length (mm)||390||400||425||430|
|Top Tube Effective (mm)||561.7||589||615||652|
|Fork Offset (mm)||44||44||44||44|
|Stand Over Height||714||716||732||734|
|Chain Stay (mm)||430||430||430||430|
|Seat Post Diameter||30.9||30.9||30.9||30.9|
|Handlebar Width (mm)||780||780||780||780|
|Stem Length (mm)||35||35||35||35|
We're an authorized Marin dealer, which means that every bike we sell is backed by Marin's warranty, including a one-year complete bike warranty and a five-year frame warranty. For full details, click here.