Description
BIG ALL-MOUNTAIN DAYS WHERE TRAVEL AND GEOMETRY MATTER MOST
BUILT FOR ABUSE AND ROWDY RIDING
ENDURO-STYLE RIDING AND RACING
BIG BIKE, BIG WHEELS, BIG FUN
The Alpine Trail is a 29” wheeled full suspension bike built for the all day enduro rider that earns their downhill fun.
Key upgrade from Alpine Trail XR:
- All-new unidirectional carbon fiber front triangle
Please note - specifications & price subject to change without prior notice.
01. FRAME | All New Unidirectional Carbon Fiber Front Triangle, Series 4 Alloy Rear End, 29 Wheels, 150mm Travel MultiTrac Suspension Platform, Internal Dropper Post and Rear Derailleur Housing, Chainstay Mounted Post Mount Disc Brake, 148x12mm Boost Thru- Axle, 73mm |
02. SIZES | Small, Medium, Large, Extra Large |
03. FORK | RockShox Yari RC, 29, 160mm of Travel, Air Sprung, Debonair, Rebound and Compression Adjust |
04. GEARS | 1 x 12 |
05. CRANKSET | FSA Comet Heavy Duty, Modular 1x |
06. CRANK LENGTH | - |
07. BOTTOM BRACKET | Mega EXO 73mm BSA |
08. CASSETTE | Shimano, Deore M6100 12-Speed, 10-51T |
09. CHAIN | KMC X-12 Silver and Black |
10. CHAINGUARD | - |
11. FRONT DERAILLEUR | - |
12. REAR DERAILLEUR | Shimano Deore, 12-Speed, SGS |
13. SHIFTER-FRONT | - |
14. SHIFTER-REAR | Shimano Deore, 12-Speed, SL6100-IR |
15. BRAKES | Shimano BL-M4100 Hydraulic, I-Spec EV Compatible |
16. ROTOR-FRONT | Shimano BR-MT420, 4-Piston Hydraulic Disc, 203mm Rotor |
17. ROTOR-REAR | Shimano BR-MT420, 4-Piston Hydraulic Disc, 180mm Rotor |
18. HANDLEBAR | Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5 Up, 9 Back |
19. STEM | Marin 3D Forged Alloy |
20. STEM LENGTH | 35mm |
21. HEAD SET | FSA No 57, Sealed Cartridge Bearings, 1 1/8" x 1 1/2 |
22. SEAT POST | TranzX, YSP23JL, 1x Remote, Size S 125mm Travel,30.9mm |
23. SADDLE | Marin Speed Concept |
24. HUB-FRONT | Shimano HF-MT410B, 110x15mm, Centerlock |
25. HUB-REAR | Shimano HB-MT410B, 148x12mm, Centerlock, Microspline Freehub Body |
26. AXLE-REAR | - |
27. SPOKES | 14g Black Stainless Steel |
28. RIMS | Marin, Double Wall Alloy, 29mm Inner, Pinned Joint, Disc Specific, 32H, Tubeless Compatible |
29. TYRES | Front: Maxxis Assegai 29x2.5, MAXX TERRA, EXO+, Tubeless Compatible; Rear: Maxxis Assegai 29x2.5, MAXX GRIP, DoubleDown, Tubeless Compatible |
30. PEDALS | - |
GEOMETRY

S | M | L | XL | |
---|---|---|---|---|
STACK | 619 | 628 | 632 | 643 |
REACH | 430 | 455 | 480 | 515 |
HEADTUBE ANGLE | 63.5° | 63.5° | 63.5° | 63.5° |
HEADTUBE LENGTH | 100 | 110 | 115 | 130 |
SEATTUBE ANGLE | 78° | 78° | 78° | 78° |
SEATTUBE LENGTH | 390 | 400 | 425 | 430 |
TOPTUBE EFFECTIVE | 561.7 | 589 | 615 | 652 |
BB HEIGHT | 342 | 342 | 342 | 342 |
BB DROP | 35 | 35 | 35 | 35 |
CHAINSTAY | 430 | 430 | 430 | 430 |
WHEELBASE | 1199 | 1229 | 1256 | 1297 |
STANDOVER HEIGHT | 690 | 694 | 695 | 698 |
FORK OFFSET | 44 | 44 | 44 | 44 |
SEATPOST DIAMETER | 30.9 | 30.9 | 30.9 | 30.9 |
HANDLEBAR WIDTH | 780 | 780 | 780 | 780 |
STEM LENGTH | 35 | 35 | 35 | 35 |
CRANK LENGTH | 170 | 170 | 170 | 170 |
All lengths in millimeters
TECHNOLOGY

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.
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.
LEARN MORE
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.

BRIDGELESS SEATSTAY
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.

MODERN ANGLES
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.
SUSPENSION SETUP
REAR SHOCK SET UP
Recommended Sag = 30%/19.5mm
Step 1: Set correct pressure in rear shock.
Step 2: Sit on the bike and cycle the suspension (*with correct riding gear).
Step 3: Reset O-ring and sit on the bike, DO NOT BOUNCE, carefully step off.
Step 4: Measure sag (from o-ring to seal of shock), If it does not match the bike’s recommended sag in millimeters repeat process.
Step 5: Adjust rebound setting to ensure proper control.
FORK SET UP
Marin recommends that all bikes front and rear suspension feel balanced
Step 1: After rear sag is set follow the recommended pressure from the fork manufacturer.
Step 2: Bounce evenly up and down on the bike, cycling the suspension up and down to make sure both front and rear suspension feel balanced, if the front does not match the rear add or release pressure.
Step 3: Once the bike feels balanced adjust the rebound damping to ensure proper control.
ROCK SHOX DELUXE SELECT + RT
LBS | KG | PSI |
---|---|---|
120 | 54 | 80 |
130 | 59 | 100 |
140 | 64 | 115 |
150 | 68 | 130 |
160 | 73 | 140 |
170 | 77 | 150 |
180 | 82 | 160 |
190 | 86 | 170 |
200 | 91 | 180 |
210 | 95 | 190 |
220 | 100 | 200 |
230 | 104 | 210 |
240 | 109 | 220 |
250 | 113 | 230 |
260 | 118 | 240 |
270 | 122 | 250 |
REVIEWS
Great frame geometry and suspension action, backed up by sleek carbon fibre looks and a solid suite of parts for the price.