2026 Roscoe 8 Gen 4 Hardtail Mountain Bike
Fully assembled, tuned, and test-ridden—ready to ride at pickup from any DFW Bike Mart location.
Expected to ship within 3 days
Professionally built and test-ridden before it ships. Arrives mostly assembled with just minimal setup needed. See Reassembly Instructions
Delivered fully assembled and tuned by Bike Mart—ready to ride right at your doorstep within 10 miles of any DFW location.
Ship
Get your bike or equipment delivered to your home directly from Bike Mart via our FedEx or USPS Carrier partners. Adult signature is required for all bike deliveries and for equipment & gear deliveries over $500.
For orders that include a bike, it will be professionally pre-built and shipped to your home with minimal assembly needed. While we try to make it as easy as possible, basic mechanical skills and proper tools are required. For orders that include a frameset please visit our support center to make sure you have the specialty tools and skills required.
If you decide to take your bike to a local retailer for assembly, additional fees will apply.
Pickup
We’ve made it easier than ever to get the gear and bikes you love—fast. With our Buy Online, Pick Up In Store (BOPIS) option, you can shop online and pick up your items at your convenience from any of our six DFW locations.
The best part about picking up at a Bike Mart location is that you get the same high quality service with the convenience of having the exact bike or part.
Bikes / Car Racks will be assembled and installed at no extra charge
Delivery
When you select "Home Delivery" at checkout. Your bike will be professionally assembled and the closest Bike Mart store will call you to schedule the delivery.
We offer home delivery for bike purchases only within 10 miles of a Bike Mart location. Contact us if you live beyond 10 miles and we can discuss more options. Additional fees may apply.
In stock bikes will be delivered within 7 days. Warehouse bikes will delivered within 14 days*.
2026 Roscoe 8 Gen 4 Hardtail Mountain Bike
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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.
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Rock Solid
The bolt on downtube guard will stay put even after ripping though a chucky trail, keeping your bike quiet and protected.
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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.
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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.
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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.
Overview
Overview
Technical Specifications
Technical Specifications
| Frame | Alpha Platinum Aluminum, tapered head tube, ZS headset, internal derailleur & 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 travelSize: M, ML, L, XL Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt X axle, 150mm travel |
| 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 |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Bontrager Line TLR 30, Tubeless Ready, 28-hole, Presta valve |
| *tire | Size: S Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 27.5x2.50''Size: M, ML, L, XL Bontrager Brevard Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.50'' |
| Tire part | Bontrager TLR sealant, 6oz |
| Rim strip | Bontrager TLR |
| Max tire size | Frame: 29x2.60\, Fork: See manufacturer |
| 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 |
| Max chainring size | 1x: 34T, min 28T |
| Saddle | Bontrager Verse P3, steel rails |
| *seatpost | Size: S TranzX JD-YSI34, 150mm travel, internal routing, 31.6mm, 456mm lengthSize: M, ML TranzX JD-YSI34, 170mm travel, internal routing, 31.6mm, 500mm lengthSize: L, XL TranzX JD-YSI34, 200mm travel, internal routing, 31.6mm, 565mm length |
| *handlebar | Size: S Bontrager alloy, 31.8mm, 15mm rise, 750mm widthSize: M, ML, L, XL Bontrager Comp, alloy, 31.8mm, 40mm rise, 780mm width |
| Grips | Trek Line Comp, nylon lock-on |
| *stem | Size: S Bontrager Comp, 31.8mm, 7 degree, 35mm lengthSize: M, ML, L, XL 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 |
| Brake | Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper |
| *brake rotor | Size: S, M, ML, L, XL Shimano RT66, 6-bolt, 203mmSize: S, M, ML, L, XL Shimano RT66, 6-bolt, 180mm |
| Rotor size | Max brake rotor sizes - Frame: 203mm, min 180mm, Fork: see fork manufacturer |
| Weight | M - 14.18 kg / 31.27 lbs (with TLR sealant, no tubes) |
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Parts are subject to change without notice. Chat with us if you have any questions.
Geometry
Geometry
All measurements provided in cm unless otherwise noted.
| Frame size number | 15.5" | 17.5" | 18.5" | 19.5" | 21.5" |
| Frame size letter | S | M | ML | L | XL |
| Wheel size | 27.5" | 29" | 29" | 29" | 29" |
| A — Seat tube | 33.0 | 37.5 | 40.0 | 42.5 | 45.0 |
| B — Seat tube angle (degrees) | 73.1° | 73.1° | 74.1° | 74.1° | 75.1° |
| Effective seat tube angle (degrees) | 75.0° | 75.0° | 76.0° | 76.0° | 77.0° |
| C — Head tube length | 9.0 | 10.0 | 10.5 | 12.0 | 14.5 |
| D — Head angle (degrees) | 65.0° | 65.0° | 65.0° | 65.0° | 65.0° |
| E — Effective top tube | 57.5 | 61.1 | 61.4 | 63.2 | 65.5 |
| F — Bottom bracket height | 31.1 | 31.2 | 31.2 | 31.2 | 31.2 |
| G — Bottom bracket drop | 4.5 | 6.1 | 6.1 | 6.1 | 6.1 |
| H — Chainstay length | 42.5 | 43.0 | 43.0 | 43.0 | 43.0 |
| I — Offset | 3.7 | 4.4 | 4.4 | 4.4 | 4.4 |
| J — Trail | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 |
| K — Wheelbase | 113.9 | 118.6 | 120.3 | 122.4 | 126.5 |
| L — Standover | 71.4 | 73.5 | 74.0 | 74.0 | 74.0 |
| M — Frame reach | 41.5 | 44.0 | 45.5 | 47.0 | 50.0 |
| N — Frame stack | 60.4 | 64.4 | 64.8 | 66.2 | 68.4 |
This Geometry Chart is provided by the Manufactuer. Chat with us if you have any questions.
Sizing
Sizing
| size | inches | cm |
|---|---|---|
| S | 5'1" - 5'5" | 155 - 165 |
| M | 5'5" - 5'10" | 165 - 177 |
| ML | 5'8" - 5'11" | 173 - 180 |
| L | 5'10" - 6'2" | 177 - 188 |
| XL | 6'2" - 6'5" | 188 - 195 |
Sizing to be used as a reference only. Chat with us if you have any questions.
