Marin Alpine Trail Alloy MTB Frame

The Marin Alpine Trail is our big-hitting, big-wheeling, hard charger. It’s built for the roughest and rowdiest around. Whether you’re a park rat, enduro racer snake or just love to send it with the big dogs, the Alpine Trail is the perfect beast for the job.

The all-new Alpine Trail series is our boldest and most capable line of 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. The Alpine Trail XR frame kit gives the rider the chassis to create the Alpine Trail that best meets their needs. All the essentials are included, from the rear shock to the headset, the rear axle and seattube collar. You bring your creativity and components to create the raddest bike on the trail.

Geometry

	S	M	L	XL
Stack	620	634	643	647
Reach	430	460	490	520
Headtube Angle	63.5	63.5	63.5	63.5
Headtube Length	100	115	125	130
Seattube Angle	79	79	79	79
Seattube Length	400	420	430	460
Toptube (Effective)	556	592	626	659
Chainstay Length	435	435	435	435
Wheelbase	1211	1248	1283	1318
BB Height	352	352	352	352
BB Drop	24/7	24/7	24/7	24/7
Standover	683	690	695	698
Fork Offset	44	44	44	44

 

Size Guide:

S	M	L	XL
160-167cm	168-179cm	180-187cm	188-193cm

 

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. Furthermore, the flip chips located at the seatstay pivots alter the bottom bracket height and chainstay length (low BB/long CS setting = 345/442mm, high BB/short CS setting = 352/435mm) so that riders can perfectly dial their bike in to match the terrain they are looking to conquer.