Marin Alpine E2 Bosch
"The Alpine Trail E Bosch is our biggest, badest 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 (r), 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.
Specifications
| Frame: All New, Series 4 Alloy, 160mm MultiTrac Suspension LT, Adjustable Headset & CS Length/Height, Integrated Battery/Charging Port, 148mm Rear Thru-Axle |
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Suspension Fork: Fox 38 Performance Elite, 170mm Travel, 29" , 110x15mm Boost Kabolt Thru-Axle, 44mm Offset, Integrated Fox Fender |
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Rear Suspension: Fox Float DHX2, Performance Elite, Low Speed Compression and Rebound Adjustment, 205x65mm, Trunnion Upper Mount, 30mmxM8 Lower Mount, M Spring Rate = 450lb, L Spring Rate = 500lb, XL Spring Rate = 550lb |
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Rims: Marin Aluminum Double Wall, 29" Diameter, 32mm Inner Rim Width, Pinned Joint, Disc Specific, Tubeless Compatible |
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Hub, Rear: Shimano HB-TC500, 148x12mm, Centerlock, Standard Freehub Body |
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Hub, Front: Shimano FH-TC500, 110x15mm, Centerlock, 32H |
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Spoke, Nipples: 14g Stainless Steel |
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Tires: Front: Vee Tire Co Attack HPL, E-Control Compound, Front 29x2.5" |
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Tires Rear: Vee Tire Co Attack HPL, E-Control Compound, Front 27x2.5" |
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Derailleur, Rear: Shimano XT 12-Speed, SGS |
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Shift Lever: Shimano SLX 12-Speed, I-Spec EV |
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Motor: Bosch Performance Line CX, 85Nm |
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Crankset: e*thirteen e*spec Plus, 160mm Length |
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Chain: KMC E12S, E-Bike Specific Chain |
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Cassette: Shimano SLX M7100 Cassette, 12-Speed, 10-51T |
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Brakes: TRP DH-R EVO 4-Piston Hydraulic Disc, 203mm, 2.3mm Thick |
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Handlebar: Marin Trail, 35mm Clamp, 7000 Alloy Bar, 800mm Length, 20mm Rise, 5 Degree Up, 8 Degree Back |
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Stem: Marin CNC, 35mm Length, 35mm Bar Bore |
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Grips: Marin Grizzly Lock On |
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Headset: FSA Custom Headset, Adjustable HTA Design |
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Seatpost: TranzX, YSP39 1x Remote, 34.9 Seatpost Diameter, Travel S = 150mm, M/L = 170mm, XL = 200mm |
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Saddle: Marin Speed Concept |
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Pedals: N/A |
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Battery: Bosch PowerTube 750 Wh |
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Display: Bosch BRC3100 Systems Controller |
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Switch: Bosch BRC3300 Bluetooth Remote 22.2mm Clamp |
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Extras: e*thirteen e*Spec Chainguide ,Cush Core Pro Tire Inserts, Marin Tire Sealant 300ml Bottle, Bosch EB12.110.016; 2A Charger |
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Range, Charging Time: 31-78 miles (Based on Rider Weight, Terrain, Climate and Level of Assist Used), 11 Hours (estimated, under ideal conditions) |
Geometry
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Size |
M | L | XL |
|---|---|---|---|
| Stack | 633.51 | 642.46 | 646.93 |
| Reach | 460 | 490 | 520 |
| Headtube Angle | 63.5° | 63.5° | 63.5° |
| Headtube Length | 115 | 125 | 130 |
| Seattube Angle | 79° | 78.8° | 78.6° |
| Seattube Length | 410 | 420 | 430 |
| Toptube Effective | 591.33 | 626.52 | 659.24 |
| BB Height | 352 | 352 | 352 |
| BB Drop (Rear/Front) | 7/24 | 7/24 | 7/24 |
| Chainstay | 435 | 435 | 435 |
| Wheelbase | 1248.12 | 1282.57 | 1314.8 |
| Standover Height | 712.81 | 721.75 | 732.94 |
| Fork Offset | 44 | 44 | 44 |
| Seatpost Diameter | 34.9 | 34.9 | 34.9 |
| Handlebar Width | 780 | 780 | 780 |
| Stem Length | 35 | 35 | 35 |
| Crank Length | 160 | 160 | 160 |
All lengths in millimeters
Sizing
How do you know what size of bike you should buy?
A good place to start is using the sizing charts included for each bike on the info page. If you're in the middle of the recommended height range for a specific size then usually that's the correct one to go with. If you find yourself overlapping sizes at either the top or bottom of the height recommendation than sizing up or down could be a consideration.
For more relaxed fitting "city-style" bikes sizing is less crucial because often they will have adjustable stems and offer more overlap in sizing. Smaller bikes will be slightly easier to manage when starting and stopping while larger bikes will feel more stable when riding. Most often we recommend sizing down in this category.
Bikes that have a more aggressive riding position i.e. road, gravel and mountain bikes sizing is more important. In these categories we usually look closely at 3 numbers, reach, stack, and top-tube length.