The Trek Rail+ 8 Gen 5 is Trek’s aluminum enduro e-MTB, with a Bosch Performance Line CX motor, an 800Wh battery and 160mm of travel at both ends. At $5,999.99 it sits $1,000 above the Rail+ 5 Gen 5. Both bikes use the same frame, motor and battery, so the extra money goes into the suspension, brakes, drivetrain and tires. I haven’t ridden the Rail+ 8. The closest bike I’ve filmed is the Aventon Ramblas, a mid drive hardtail, and I’ll compare it below with the Rail+ 5 and the Specialized Turbo Levo 4 Alloy. Everything here comes from Trek’s product pages, checked on Oct 28, 2026 and linked at the bottom.
Motor and battery
Trek’s spec summary lists the Performance Line CX at 85 to 120 Nm. The feature copy explains the range: the motor ships at 85 Nm and can be tuned up to 120 Nm and 750W in the Bosch eBike Flow app. Trek also lists Bosch’s eMTB mode with Extended Boost. It’s a Class 1 bike, so assist stops at 20 mph and there’s no throttle. Trail rules for e-bikes vary, so check before you ride. Our e-bike classes guide explains the classes.
The 800Wh Bosch PowerTube sits in the down tube. Trek’s RIB 2.0 design lets you pull it out for charging, with a second catch so it can’t drop out. Trek doesn’t list a range. The charger is Bosch’s 4A unit. You control the motor with the wireless Bosch Mini Remote, and a Kiox 400C display sits in the top tube. Its USB-C port can charge your phone from the main battery.
Suspension and frame
The aluminum frame has 160mm of rear travel, controlled by a RockShox Super Deluxe shock. Up front is a 160mm RockShox Lyrik with an air spring. Trek gives you several ways to tune it:
- Mino Link. Flip it to change the head tube angle by half a degree and the bottom bracket height by up to 10mm, choosing between slack and slacker.
- Flip chip. Switches the leverage rate between “less progressive” for a plusher feel and “more progressive” for big hits or a coil shock.
- Angle-adjust headset. Also listed in the frame spec.
- Active Braking Pivot. Trek says it lets them tune how the suspension reacts to braking and to acceleration separately.
Trek also has a suspension calculator to help you set the sag for your weight.
Parts
- Brakes. Shimano MT620 4-piston hydraulic brakes with 203mm rotors.
- Gears. SRAM Eagle 70 T-Type 12 speed with a 10 to 52 cassette and a 34T ring.
- Wheels and tires. Bontrager Line TLR 30 rims and a Rapid Drive 108 rear hub with Bontrager Brevard Pro XR 2.5 in tires. The parts list shows 29 in on M to XL and 27.5 in on S. The bike comes set up for tubeless, with valves and sealant included.
- Dropper. A Bontrager Line Dropper with 150mm of travel on S, 170mm on M and 200mm on L and XL.
- Included extras. Nylon platform pedals and a Trek custom fender.
Trek lists 54.42 lb for a size M, set up tubeless. The total limit is 300 lb, including the bike, which leaves about 245 lb for the rider and gear.
On Oct 28, 2026, every size in both colors was out of stock on Trek’s site.
How it compares
Against the Trek Rail+ 5 Gen 5: it has the same CX motor, 800Wh battery and 160mm aluminum frame for $4,999.99 on Oct 28, 2026, and Trek lists it at 54.64 lb. The Rail+ 5 uses a RockShox Psylo Silver fork, a Deluxe Select shock, Shimano MT420 brakes, a Shimano Deore 12 speed drivetrain and Gunnison Elite XR tires. The Rail+ 8 steps up to the Lyrik, Super Deluxe, MT620 brakes, SRAM Eagle 70 and Brevard Pro XR tires. Weight is almost the same. On Oct 28 the Rail+ 5 had two size and color options in stock online, and the Rail+ 8 had none.
Against the Specialized Turbo Levo 4 Alloy: it was $4,999.99 on Oct 26, 2026, with a 105 Nm motor, an 840Wh battery, a 160mm fork, 150mm of rear travel and the same SRAM Eagle 70 drivetrain. Specialized lists 57.3 lb in size S4. On paper, the Levo has more torque out of the box and costs $1,000 less. The Rail+ 8 is about 3 lb lighter as listed and can be tuned to 120 Nm in the app.
Against the Aventon Ramblas, which I filmed: it’s a hardtail with a coil fork and no rear suspension. Aventon now sells it as the Ramblas ADV and lists 100 Nm, a 708Wh battery and about 54 lb. The Rail+ 8 is a different kind of bike, with 160mm of rear travel for rough descents.
Within Trek’s own lineup, the Slash+ is the lighter long-travel option: a carbon frame with TQ’s 60 Nm HPR60 and a 580Wh battery, from $7,999.99 at 47.58 lb. The Powerfly+ FS 4 Gen 4 has a CX motor and 120mm of rear travel for $4,499.99.
FAQ
Have I ridden the Rail+ 8 Gen 5?
No. This page is based on Trek’s product pages, checked Oct 28, 2026.
How much torque does it have?
85 Nm out of the box, according to Trek. Trek says you can tune it up to 120 Nm in the Bosch eBike Flow app.
What’s the difference between the Rail+ 8 and Rail+ 5?
They share the frame, motor and battery. For $1,000 more, the Rail+ 8 has a better fork, shock, brakes, drivetrain and tires.
Does it have a throttle?
No. It’s a Class 1 pedal assist bike that helps up to 20 mph.
Is it in stock?
Not online. Every size and color was out of stock on trekbikes.com on Oct 28, 2026.
Pros and cons (from the specs and sources)
Pros: Bosch CX motor tunable to 120 Nm; 800Wh removable battery with a safety catch; 160mm of travel at both ends; RockShox Lyrik and Super Deluxe; 4-piston brakes with 203mm rotors; long dropper posts; adjustable geometry and leverage rate; tubeless setup, pedals and fender included.
Cons: out of stock online on Oct 28, 2026; 54.42 lb; 300 lb total limit; no throttle; no range figure; $1,000 more than the Levo 4 Alloy with less torque out of the box.
Who it’s for
On paper, the Rail+ 8 fits riders who want a long-travel aluminum e-MTB with a big battery and better suspension than the Rail+ 5, and who ride steep, rough trails. If the Rail+ 5’s parts are enough for you, it has the same motor, battery and frame for $1,000 less.
Price
$5,999.99 on trekbikes.com as of Oct 28, 2026, out of stock online that day.
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