Marin Alpine Trail E2 Bosch 2025 eMTB

The all-new Alpine Trail E Bosch is our biggest, baddest beast of a bike family. Moving one step beyond in capability from the Alpine Trail E models, the new Alpine Trial E Bosch eMTBs are constructed with all-new Series 4 aluminum MultiTrac 2 LT frames that feature significant upgrades for riders who challenge themselves with the steepest, most technical terrain, as well as those who require the maximum in range.

We’ve increased the travel by 10mm at both ends, now standing at 170mm (f) and 160mm ®, and relocated the pivots to the chainstays to deliver the suspension performance and tunability demanded by the longer travel. Riders have the ability to alter the head tube angle by +/- .75° by repositioning the lower headset cup while the bottom bracket height/chainstay length can be changed by the means of seatstay flip chips.

Bosch’s Performance Line CX drive units twist out 85Nm of torque and are backed by large capacity 750Wh PowerTube batteries, nestled safely in the frame’s downtube, giving you the largest battery in the Marin range for the biggest adventures.

The Alpine Trail E2 (Bosch) lights the wick with a premium Fox suspension pairing and Shimano’s XT 12-speed drivetrain, along with our own proprietary CNC 35mm stem and Trail Bar combo.

Specification

Frame	All New, Series 4 Alloy, 160mm MultiTrac Suspension LT, Adjustable Headset & CS Length/Height, Integrated Battery/Charging Port, 148mm Rear Thru-Axle
Fork	Fox 38 Performance Elite, 170mm Travel, 29” , 110×15mm Boost Kabolt Thru-Axle, 44mm Offset, Integrated Fox Fender
Rear Shock	Fox DHX2, Performance Elite, Low Speed Compression and Rebound Adjustment, 205×65mm, Trunnion Upper Mount, 30mmxM8 Lower Mount, S/M Spring Rate = 350lb, L/XL Spring Rate = 450lb
Rims	Front: Marin Aluminum Double Wall, 29” Diameter, 32mm Inner Rim Width, Pinned Joint, Disc Specific, Tubeless Compatible; Rear: Marin Aluminum Double Wall, 27.5” Diameter, 32mm Inner Rim Width, Pinned Joint, Disc Specific, Tubeless Compatible
Rear Hub	Shimano HB-TC500, 148×12mm, Centerlock, Standard Freehub Body
Front Hub	Shimano FH-TC500, 110×15mm, Centerlock, 32H
Spokes	14g Black Stainless Steel
Tyres	Vee Tire Co Attack HPL, E-Control Compound, Front 29×2.5”, Rear 27.5×2.5”
Rear Derailleur	Shimano XT 12-Speed, SGS
Shifter	Shimano SLX 12-Speed, I-Spec EV
Crankset	e*thirteen e*spec Plus Cranks, 160mm Length
Motor	Bosch Performance Line CX, 85Nm, 25 km/h
Chain	KMC E12S, E-Bike Specific Chain
Cassette	Shimano SLX M7100 Cassette, 12-Speed, 10-51T
Front Brake	TRP DH-R EVO 4-Piston Hydraulic Disc, 203mm, 2.3mm Thick
Rear Brake	TRP DH-R EVO 4-Piston Hydraulic Disc, 203mm, 2.3mm Thick
Handlebar	Marin Trail, 35mm Clamp, 7000 Alloy Bar, 800mm Length, 20mm Rise, 5 Degree Up, 8 Degree Back
Stem	Marin CNC, 35mm Length, 35mm Bar Bore
Grips	Marin Grizzly Lock On
Headset	FSA Custom Headset, Adjustable HTA Design
Seatpost	TranzX, YSP39 1x Remote, 34.9 Seatpost Diameter, Travel S = 150mm, M/L = 170mm, XL = 200mm
Saddle	Marin Speed Concept
Pedals	N/A
Battery	Bosch PowerTube 750 Wh
Display	Bosch BRC3100 Systems Controller
Switch	Bosch BRC3300 Bluetooth Remote 22.2mm Clamp
Charger	Bosch Smart System 2A
Extras	e*thirteen e*Spec Chainguide
Extras	Cush Core Pro Tire Inserts, Marin Tire Sealant 300ml Bottle
Max System Weight	138kg – The maximum system weight is the maximum total weight of the bike, rider and any luggage combined

Specifications are subject to change without notice

Size Guide

Frame Size	Minimum Height	Maximum Height
Medium	168cm (5’6”)	178cm (5’10”)
Large	178cm (5’10”)	188cm (6’2”)
X Large	188cm (6’2”)	193cm (6’4”)

We have developed our size guide from our selling experience and it may differ from the manufacturers guide. Please note, this is only a guide and if you have any concerns over sizing please get in contact

Geometry

Frame Size	M	L	XL
A – Stack	633.51	642.46	646.93
B – Reach	460	490	520
C – Headtube Angle	63.5°	63.5°	63.5°
D – Headtube Length	115	125	130
E – Toptube Effective	591.33	626.52	659.24
F – Seattube Angle	79°	78.8°	78.6°
G – Seattube Length	410	420	430
H – BB Height	352	352	352
I – BB Drop (Rear/Front)	7/24	7/24	7/24
J – Chainstay	435	435	435
K – Wheelbase	1248.12	1282.57	1314.8
L – Standover Height	712.81	721.75	732.94
M – Fork Offset	44	44	44
Seatpost Diameter	34.9	34.9	34.9
Stem Length	35	35	35
Crank Length	160	160	160

Want to compare the size of your current bike to this one? Read our Reach and Stack guide here.