2025 Marin Alpine Trail XR: Even More Unstoppable
The Marin Alpine Trail XR has long been the go-to machine for aggressive riders who desire a capable all-rounder to dominate technical terrain. The 2025 model elevates that reputation, offering an even more capable platform, boasting 170mm of travel up front & 160mm out back, for conquering the most challenging trails.
![Marin Alpine Trail XR 29 2025 - Brushed Alloy](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-wideshot-.jpeg?t=1715250491)
This aggressive full suspension mountain bike boasts a game-changing upgrade: a plush 170mm RockShox Ultimate fork. Paired with a nimble 27.5-inch rear wheel and 160mm of rear travel, the Alpine Trail XR's mullet setup delivers the best of both worlds: lightning-quick agility and unstoppable rollover capability.
The progressive geometry carves through corners with laser focus, while the high-performance spec is built to take a beating. Whether you're dicing it up on enduro courses or laying waste to bike park lines, the 2025 Alpine Trail XR fuels your adrenaline-packed MTB adventures. It's a no-compromise machine, ready to unleash your wildest riding ambitions.
![Marin Alpine Trail XR 29 2025 - Brushed Alloy](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-actionshot-new-.jpeg?t=1715250766)
ALL-NEW MULTITRAC 2 LT ALLOY FRAMES
Debuting on the Alpine Trail alloy models, MultiTrac 2 LT shifts from seatstay pivots to chainstay pivots, ensuring that the suspension performance matches Marins design goals, which are not achievable using pivots located on the seatstay once travel exceeds 150mm. With MultiTrac 2 LT, the benefits of relocating the rear pivot points from the seatstay to the chainstay become apparent, as it reduces anti-rise, allowing for better chassis control while braking, more mid-stroke support, and better feel at bottom out.
![Marin Alpine Trail XR 29 2025 - Brushed Alloy](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-front-angle-.jpeg?t=1715252155)
ADJUSTABLE GEOMETRY
With the integrated flip chips, adjustable headset and an aftermarket 29” rear wheel, Alpine Trail aluminum riders can select 12 unique configurations to run their bikes. These configurations allow the best fine-tuning of chassis to trail conditions available.
Flip chips are easy to reconfigure trailside and easily done using a 6mm hex wrench, require no additional parts, and incorporate laser-etched graphics that indicate the position of the chips. The stock 27.5” rear wheel can be swapped out for a 29” rear wheel (not included) if desired, along with changing the position of the seatstay flip chips.
![Marin Alpine Trail XR 29 2025 - Brushed Alloy](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-geometry-flip-chip-.jpeg?t=1715251803)
BEAR BOX DOWNTUBE STORAGE
The all-new Alpine Trail aluminum models now feature Marins Bear Box integrated downtube storage, complete with a custom nylon bag with a weather-sealed zipper. The hatch door is secure and double-sealed, with bottle bosses. Keep your riding essentials safe and protected from the elements during your big ride.
![Marin Alpine Trail XR 29 2025 - Brushed Alloy](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-storage-.jpeg?t=1715251594)
ADJUSTABLE HEADTUBE ANGLE
Using Marins proprietary headset cups and inserts, the headtube angle on Alpine Trail aluminum models can be adjusted to +0.75° or -0.75° from the standard 63° position, giving the rider three options.
![Marin Alpine Trail XR 29 2025 - Brushed Alloy](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-headangle-.jpg?t=1715252594)
PROTECTION
Chainstay and seatstays are protected with durable rubber guards that minimize noise and protect paint finishes, and integrated downtube guards helps deflect errant rocks, logs, or anything else riders may encounter on the trail.
Additionally, all aluminum frame models include a gasket around the cable exit hole reduces noise and prevents the brake hose and derailleur cable from marring the frame, and a mudflap positioned over the lower suspension pivot keeps spray and muck off the bearings. Cable ports are of an all-new design and keep the frame innards sealed. These ports use rubber membranes punctured during initial assembly and seal around the housing or hose once inserted. They will be available as a service part for when riders make changes to their components.
![Marin Alpine Trail XR 29 2025 - Brushed Alloy](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-frame-protection-.jpeg?t=1715252851)
Geometry
![](https://cdn11.bigcommerce.com/s-h4smy34w/images/stencil/original/image-manager/marin-alpine-trail-xr-geometry-image-.jpg?t=1715253192)
S | M | L | XL | |
---|---|---|---|---|
A - STACK | 620.08 | 633.51 | 642.6 | 646.93 |
B - REACH | 430 | 460 | 490 | 520 |
C - HEADTUBE ANGLE | 63.5° | 63.5° | 63.5° | 63.5° |
D - HEADTUBE LENGTH | 100 | 115 | 125 | 130 |
E - SEATTUBE ANGLE | 79.2° | 79° | 78.8° | 78.6° |
F - SEATTUBE LENGTH | 400 | 420 | 430 | 460 |
G - TOPTUBE EFFECTIVE | 556 | 592 | 626 | 659 |
H - BB HEIGHT | 352 | 352 | 352 | 352 |
I - BB DROP (REAR/FRONT) | 7/24 | 7/24 | 7/24 | 7/24 |
J - CHAINSTAY | 435 | 435 | 435 | 435 |
K - WHEELBASE | 1211.42 | 1248.11 | 1282.57 | 1317.8 |
L - STANDOVER HEIGHT | 683.32 | 689.88 | 695.6 | 698.13 |
M - FORK OFFSET | 44 | 44 | 44 | 44 |
SEATPOST DIAMETER | 34.9 | 34.9 | 34.9 | 34.9 |
HANDLEBAR WIDTH | 780 | 780 | 780 | 780 |
STEM LENGTH | 35 | 35 | 35 | 35 |
CRANK LENGTH | 160 | 160 | 160 | 160 |
- FRAME:
- All New Series 4 6061 Aluminum, 29” Wheels, 160mm Travel MultiTrac LT Suspension Platform, Integrated Downtube Storage, Adjustable Headset & CS Length/BB Height, Full Internal Cable Routing, Chainstay Mounted Post Mount Disc Brake, 148x12mm Boost Thr
- FRAME MATERIAL:
- Aluminium
- FORK BRAND:
- RockShox
- FORK:
- RockShox Zeb Ultimate, 170mm Travel, 29", 110x15mm Maxle Stealth, 44mm Offset
- FORK TRAVEL:
- 170 mm
- REAR SHOCK:
- RockShox Super Deluxe Coil Ultimate, 205x65, 30xM8 Lower Hardware, Custom Tune, Spring Rates S/M: 350lbs, L/XL:400lbs
- WHEEL SIZE:
- 27.5 R 29 F
- WHEELS:
- Marin, Double Wall Alloy, 29mm Inner, Sleeved Joint, Disc Specific, 32H, Tubeless Compatible - Formula, DCL-3482, 148x12, 4 Sealed Bearings, 6-Bolt Disc, XD Driver, 32H Formula, DC-711, 110x15mm, 6-Bolt Disc, 32h - 14g Black Stainless Steel
- TYRES:
- Maxxis Assegai MAXX GRIP, Front 29x2.5 EXO+, Rear 27.5x2.5" DoubleDown, Tubeless compatible
- DROPPER SEATPOST:
- Yes
- SEATPOST:
- TranzX, YSP39 1x Remote, 34.9 Seatpost Diameter, Travel S = 150mm, M/L = 170mm, XL = 200mm
- SADDLE:
- Marin Speed Concept
- CRANKSET:
- SRAM GX Eagle, 32T, 55MM CL, 170MM Length
- STEM:
- Marin CNC, 35mm Length, 35mm Bar Bore
- GRIPS:
- Marin Grizzly Lock-On
- SHIFTERS:
- SRAM GX Eagle Lunar MMX Mount
- BRAKE BRAND:
- SRAM
- HYDRAULIC BRAKES:
- Yes
- BRAKES:
- SRAM DB8 4-Piston Hydraulic Disc, HSC 200mm Rotor
- REAR DERAILLEUR:
- SRAM GX Eagle Lunar 12-Speed
- CHAIN:
- SRAM NX Eagle
- NUMBER OF GEARS:
- 12 Speed
- PEDALS:
- Available for Purchase
- FRONT MUDGUARD:
- MTB Monster Front Fender
- EXTRAS:
- Bolt-On 12mm Thru-Axle, 174mm Length, 1.0 Thread Pitch, 16.5mm, Tapered Head - Downtube Storage Bag
- TYPE OF BIKE:
- Enduro
- DESIGNED FOR:
- Conquering challenging terrain that mixes technical climbs with rough, steep descents. Its superb balance of weight and downhill capability making it a firm favourite with more aggressive riders.
- IDEAL TERRAIN:
- Excels on downhill sections with features like drops, jumps, rock gardens, and loose scree. Whether you're racing enduro, hitting the bike park, or tackling a black run, an enduro MTB can handle it all.
- PLEASE NOTE:
- Marin reserve the right to make changes to the product and component information appearing on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.