# Roscoe 8 XL Dark Star

Roscoe 8 is a rowdy hardtail built to hunt for side hits and dive into the steep stuff . Its Alpha Platinum Aluminum frame pairs with a Fox Rhythm 36 fork (150mm travel) to soak up rough and chunky trail debris. It delivers plenty of gears for punchy climbs, thanks to a 12-speed Shimano Deore drivetrain, and stop-on-a-dime braking power from 4-piston Shimano M6100 hydraulic disc brakes.

  

### Ready to get rowdy

With 150mm front travel, trail-smashing 29-inch wheels, and dialed-for-dirt frame features, Roscoe is ready to get rowdy on your favorite rides.

![](https://media.trekbikes.com/image/upload/TK25-Roscoe-TechFeatures-1.jpg)

### Rock Solid

The bolt on downtube guard will stay put even after ripping though a chucky trail, keeping your bike quiet and protected.

![](https://media.trekbikes.com/image/upload/TK25-Roscoe-TechFeatures-2.jpg)

### Integrated storage

The frame bag is made from a recycled ripstop polyester with an eco friendly DWR coating on the outside that is water resistant, with plenty of room to stash everything from snacks to safety supplies.

![](https://media.trekbikes.com/image/upload/TK25-Roscoe-TechFeatures-3.jpg)

### Progressive trail geometry

A long reach, slack head angle, steep seat angle, and short chain stays combine for a ride that's confidence inspiring, yet still nimble and fun.

![](https://media.trekbikes.com/image/upload/TK25-Roscoe-TechFeatures-4.jpg)

### A better way to produce aluminum

Starting in 2024, we began removing high-emission aluminum from our manufacturing and replacing it with low-emission aluminum made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.

![](https://media.trekbikes.com/image/upload/Alpha-Next-tech-feature.jpg)  

Frame

Alpha Platinum Aluminum, tapered head tube, ZS headset, internal derailleur & dropper post routing, ISCG 05, threaded BB, UDH, 148x12mm thru axle

Fork

Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt X axle, 150mm travel

Tire

Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.50''

Tire Part

Bontrager TLR sealant, 6oz

Hub Front

Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle

Hub Rear

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

Rim Strip

Bontrager TLR

Skewer Rear

Bontrager Switch thru axle, removable lever

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

Brake

Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper // Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper

Brake Rotor

Shimano RT66, 6-bolt, 180mm // Shimano RT66, 6-bolt, 203mm

Saddle

Bontrager Verse P3, steel rails

Seatpost

TranzX JD-YSI34, 200mm travel, internal routing, 31.6mm, 565mm length

Seat Collar

Bolt-on, 36.4mm

Handlebar

Bontrager Comp, alloy, 31.8mm, 40mm rise, 780mm width

Stem

Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length

Headset

FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom, 1.5 crown

Grips

Trek Line Comp, nylon lock-on

  

### Geometry Chart

B B Drop

6.1

B B Height

31.2

Chainstay Length

43

Eff Seat Tube Angle

77.0°

Eff Top Tube

65.5

Frame Reach

50

Frame Size Letter

XL

Frame Size Number

21.5"

Frame Stack

68.4

Head Angle

65.0°

Head Tube Length

14.5

Offset

4.4

Seat Tube

45

Seat Tube Angle

75.1°

Standover

74

Trail

12.5

Wheelbase

126.5

Wheel Size

29"

## Details

- **Price:** 2399.99 USD
- **Vendor:** Gio's Outdoors
- **Type:** Bicycle
- **Tags:** Gio's Outdoors, Shopify Collective

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2399.99 USD | In stock |

## Images

- Roscoe 8 XL Dark Star

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> Source: [Smart supply deals](https://smartsupplydeals.com/products/roscoe-8-xl-dark-star)
> Updated: 2026-07-22