The 2024-on Marin Alpine Trail E marks a substantial reset for the brand’s full-power enduro e-MTB. This generation moves to an all-new Series 4 alloy frame built around Bosch’s Performance Line CX system and a 750Wh PowerTube battery, pairing that drive package with 160mm of rear travel and a 170mm fork. Just as significant is the suspension redesign: Marin’s MultiTrac 2 LT layout relocates the rear pivots to the chainstays in a Horst-link configuration, replacing the previous seatstay-pivot arrangement. That change, combined with the longer-travel chassis, positions this bike more clearly as a hard-charging enduro platform than a general-purpose trail e-bike.
What distinguishes this generation is how thoroughly it leans into modern gravity-bike priorities while keeping practical adjustability in the package. Adjustable headset cups and seatstay flip chips let riders alter bottom-bracket height and chainstay length, giving the Alpine Trail E more tuning range than many alloy full-power competitors. In the market, it sits as a Bosch-powered, aluminum-framed enduro e-MTB for riders who want maximum descending capability, big-battery range, and geometry that reflects current aggressive trail and bike-park expectations rather than conservative e-bike handling.
Where to get it.
No retailers stocking size L.
No retailers carrying size L right now.
Spec sheet.
Every component shipped with this build.
Geometry & fit.
3 sizes published.
The published geometry points to a very modern, gravity-oriented fit. Across sizes M to XL, the head tube angle is a notably slack 63.5 degrees, while the seat tube angle is a steep 79 degrees. That combination typically puts the rider in a centered climbing position without giving up high-speed descending stability. Reach numbers are long at 460mm in M, 490mm in L, and 520mm in XL, and wheelbases stretch to 1248mm, 1283mm, and 1315mm respectively, reinforcing that this is a bike intended to stay composed at speed and on steep terrain rather than feel especially compact or quick-steering.
The 435mm chainstay length is relatively short for a full-power e-MTB, which should help keep the bike from feeling overly rear-heavy or cumbersome in tighter turns, especially given the overall length of the chassis. Stack figures of 633mm to 646mm are fairly tall, supporting a confident descending posture, and the 24mm BB drop suggests a planted ride feel. Taken together, the numbers indicate a bike with strong front-center stability, a roomy cockpit, and fit priorities aimed at aggressive descending and technical climbing traction rather than nimble, short-travel trail-bike manners.
Where the handlebar sits relative to the bottom bracket — the single most important fit pair.
01Fit geometry6 values
02Component geometry4 values
03Handling geometry7 values
Which size should I buy?
Slide your height to see the recommended size. GearWise's fit algorithm works from the published stack, reach, and ETT — the brand's own recommendation may differ.
→Calculated from GearWise's own stack / reach / ETT algorithm — the brand's size chart may recommend a different size, and a proper bike fit beats any calculator.
The lineup.
2 builds, ranging $4,559 – $5,279.
The Alpine Trail E is offered in two builds, the E1 and E2, both based on the same Bosch-integrated chassis and identified as Bosch 6-Bolt INT models. With only the build names provided here, there is not enough information to compare pricing, drivetrain, suspension, or brake specifications in a meaningful way.
What can be said is that both builds sit on the same generation-defining platform: Series 4 alloy frame, Bosch Performance Line CX motor, 750Wh battery, 160mm rear travel, 170mm fork compatibility, and the adjustable geometry system with headset cups and seatstay flip chips. Any buying decision between E1 and E2 will therefore come down to component package and price rather than differences in the underlying frame or ride intent.
