Trek Roscoe 8 Gen 4
$1,439.00
The Trek Roscoe 8 Gen 4 is an aluminum hardtail trail mountain bike with an Alpha Platinum Aluminum frame, Fox Rhythm 36 150mm fork, Shimano Deore 12-speed drivetrain, Bontrager Line TLR 30 Tubeless Ready rims, Bontrager Brevard Pro XR tires, and Shimano 4-piston hydraulic disc brakes.
Trek Roscoe 8 Gen 4 Overview
The Trek Roscoe 8 Gen 4 is an aluminum hardtail trail mountain bike built around an Alpha Platinum Aluminum frame. The frame includes a tapered head tube, ZS headset, internal derailleur and dropper post routing, ISCG 05, threaded bottom bracket, UDH, and a 148x12mm thru axle.
The suspension setup uses a Fox Rhythm 36 fork with a Float EVOL air spring, GRIP damper, 44mm offset, Boost110 spacing, and 150mm travel. The drivetrain features Shimano Deore M6100 12-speed shifting, a Shimano Deore M6100 long cage rear derailleur, Shimano Deore M6100 10-51 cassette, Shimano MT512 crank, and Shimano Deore M6100 chain. Bontrager Line TLR 30 Tubeless Ready rims, Bontrager Brevard Pro XR tires, and Shimano 4-piston hydraulic disc brakes complete the build.
Key Features of Trek Roscoe 8 Gen 4
- Alpha Platinum Aluminum frame includes a tapered head tube, internal derailleur and dropper post routing, ISCG 05, UDH, and a 148x12mm thru axle.
- Fox Rhythm 36 fork uses a Float EVOL air spring, GRIP damper, 44mm offset, and 150mm travel.
- Shimano Deore M6100 drivetrain uses 12-speed shifting with a 10-51 cassette.
- Bontrager Line TLR 30 rims are Tubeless Ready and use 28-hole construction with Presta valves.
- Size-specific wheels use 27.5″ on size S and 29″ on sizes M, ML, L, and XL.
- Bontrager Brevard Pro XR tires are Tubeless Ready with dual compound, aramid bead, and 60 tpi construction.
- TranzX JD-YSI34 dropper post comes with size-specific travel from 150mm to 200mm.
- Shimano 4-piston hydraulic disc brakes use Shimano RT66 6-bolt rotors.
Ride Use
This bike is built for trail mountain biking, supported by its Alpha Platinum Aluminum hardtail frame, Fox Rhythm 36 150mm fork, tubeless-ready wheels, and 4-piston hydraulic disc brakes. The Shimano Deore drivetrain, Bontrager Brevard Pro XR tires, and size-specific wheel setup match the trail-focused category.
Why Choose This Bike
The Trek Roscoe 8 Gen 4 combines an Alpha Platinum Aluminum hardtail trail frame, Fox Rhythm 36 suspension fork, Shimano Deore 12-speed shifting, Bontrager Line TLR 30 Tubeless Ready rims, and Shimano 4-piston hydraulic disc brakes in one complete build. It also includes a Bontrager Verse P3 saddle, TranzX dropper post, size-specific cockpit parts, and two color options: Dark Star and Lava. Trek frames and full-suspension swing arms are covered for the lifetime of the original owner, with other parts covered according to Trek’s limited warranty.
Product Specifications
| Feature | Details |
|---|---|
| Brand | Trek |
| Model | Roscoe 8 Gen 4 |
| Bike Type | Hardtail Trail Mountain Bike |
| Color | Dark Star, Lava |
| Frame | Alpha Platinum Aluminum, tapered head tube, ZS headset, internal derailleur and dropper post routing, ISCG 05, threaded BB, UDH, 148x12mm thru axle |
| Fork | Size S: Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 150mm travel; Size M, ML, L, XL: Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt X axle, 150mm travel |
| Shifter | Shimano Deore M6100, 12-speed |
| Rear Derailleur | Shimano Deore M6100, long cage |
| Crank | Shimano MT512, 30T ring, 55mm chainline, 170mm length |
| Bottom Bracket | Shimano BB-MT501 BSA |
| Cassette | Shimano Deore M6100, 10-51, 12-speed |
| Chain | Shimano Deore M6100, 12-speed |
| Brakes | Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper |
| Brake Rotors | Shimano RT66, 6-bolt, 203mm and 180mm |
| Front Hub | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle |
| Rear Hub | Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano freehub, Boost148, 12mm thru axle |
| Rim | Bontrager Line TLR 30, Tubeless Ready, 28-hole, Presta valve |
| Wheel Size | Size S: 27.5"; Size M, ML, L, XL: 29" |
| Tires | Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi; Size S: 27.5x2.50"; Size M, ML, L, XL: 29x2.50" |
| Tire Part | Bontrager TLR sealant, 6oz |
| Rim Strip | Bontrager TLR |
| Max Tire Size | Frame: 29x2.60"; Fork: see manufacturer |
| Handlebar | Size S: Bontrager alloy, 31.8mm, 15mm rise, 750mm width; Size M, ML, L, XL: Bontrager Comp alloy, 31.8mm, 40mm rise, 780mm width |
| Stem | Size S: Bontrager Comp, 31.8mm, 7 degree, 35mm length; Size M, ML, L, XL: Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length |
| Grips | Trek Line Comp, nylon lock-on |
| Headset | FSA Orbit, sealed cartridge bearing, 1-1/8" top, 1.5" bottom, 1.5 crown |
| Saddle | Bontrager Verse P3, steel rails |
| Seatpost | TranzX JD-YSI34, internal routing, 31.6mm; 150mm travel on S, 170mm travel on M and ML, 200mm travel on L and XL |
| Weight | M - 14.18 kg / 31.27 lbs with TLR sealant, no tubes |
| Weight Limit | 300 pounds / 136 kg combined weight of bicycle, rider, and cargo |
| Manufacturer Warranty | Trek frames and full-suspension swing arms are covered for the lifetime of the original owner. Other parts are covered according to Trek’s limited warranty. |
FAQ's Trek Roscoe 8 Gen 4
What frame does the Trek Roscoe 8 Gen 4 use?
The bike uses an Alpha Platinum Aluminum hardtail frame. The frame includes a tapered head tube, ZS headset, internal derailleur and dropper post routing, ISCG 05, threaded bottom bracket, UDH, and a 148x12mm thru axle.
What drivetrain comes on the Trek Roscoe 8 Gen 4?
This model uses a Shimano Deore M6100 12-speed drivetrain. The build includes a Shimano Deore M6100 shifter, Shimano Deore M6100 long cage rear derailleur, Shimano Deore M6100 10-51 cassette, Shimano MT512 crank, and Shimano Deore M6100 chain.
What wheel size does the Trek Roscoe 8 Gen 4 use?
Size S uses 27.5" Bontrager Line TLR 30 Tubeless Ready wheels. Sizes M, ML, L, and XL use 29" Bontrager Line TLR 30 Tubeless Ready wheels.
What is the weight of the Trek Roscoe 8 Gen 4?
The size M bike weighs 14.18 kg / 31.27 lbs with TLR sealant and no tubes. The maximum total weight limit is 300 pounds / 136 kg, including the bicycle, rider, and cargo.
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