Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Rocky Mountain
2021 Rocky Mountain Thunderbolt Alloy 10
Previous used estimate
$834 - $858
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Rocky Mountain Thunderbolt Alloy 10
12-month projected trend
13%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Price over time - 2021 Rocky Mountain Thunderbolt Alloy 10
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Thunderbolt model years
Overview
About this bike
Fast as lightning! Quick and nimble, the Thunderbolt is a total livewire. Whether it’s powering up technical climbs or popping off every trail feature in sight, its 27.5" wheels and 140mm of rear travel makes this bike ready and capable for when you’re feeling creative with line choice. The frame is available in FORM alloy, and our RIDE-9 adjustment system gives you the power to further adjust geometry and ride characteristics to your liking. - The most affordable dual suspension bike we offer - The Thunderbolt strikes that perfect balance between quickness and surefootedness - Mid Travel 140mm for a quick, playful feel - Ride-9 Geometry adjustment tailors bike to suit the rider & terrain - 150mm travel RockShox Recon fork for confident trail handling - Wide range Shimano 11spd drivetrain for all-condition performance - Wider rims and tires for maximum grip and confidence - Wider handlebar for modern fit & feel FORM alloy FRAME CONSTRUCTION: FORM tubesets utilize premium materials to meet our strict requirements. Each FORM tube that we create is engineered for its specific purpose within the frame, ensuring optimized strength, weight, and ride quality. RIDE-9 adjustment system GEOMETRY: The RIDE-9 adjustment system allows riders to quickly fine-tune their geometry and suspension with a pair of Allen keys. Nine configurations are possible thanks to two interlocking chips. Adjust your RIDE-9 position for geometry before considering suspension effects, or variables like air pressure and shock compression. Make gradual, incremental changes, take notes, and be methodical. Don’t adjust in a hurry before a big ride. Take your time and enjoy the process. Smoothlink suspension SUSPENSION: Smoothlink suspension is efficient yet supple when you’re on the pedals and across a wide range of gears. It features a controlled end-stroke and a rate-curve that feels more capable than the travel would suggest. This four-bar suspension design philosophy is centered on ride characteristics; each bike platform we develop balances variables like anti-squat, axle path, chain growth, rate curve, anti-rise, etc. to achieve the legendary Rocky Mountain ride feel.
Specifications
- Subtype
- Trail / Enduro
- Category
- Mountain
- Component Fork
- RockShox Recon Silver RL 150mm | 37mm Offset
- Component Hubs
- Front: Shimano MT410 | 15mm Boost Rear: Shimano MT400 Boost 148mm | RMB Axle | 163mm x 12mm x 1.5mm
- Component Size
- X-Small, Small, Medium, Large, X-Large
- Component Stem
- Rocky Mountain 31.8 AM | 5° Rise | All Sizes = 40mm
- Product Family
- Thunderbolt
- Component Chain
- KMC X11-1
- Component Color
- Grey/Black, Purple/Black
- Component Frame
- FORM Alloy. Full Sealed Cartridge Bearings. Press Fit BB92. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9 Adjustable Geometry + Suspension Rate FORM Alloy Rear Triangle
- Component Brakes
- Shimano MT200 2 Piston | Resin Pads | RT30 180mm F Rotor | RT30 180mm R Rotor
- Component Pedals
- Sold separately
- Component Saddle
- WTB Volt | Steel Rails | 142mm Width
- Component Headset
- FSA Orbit NO.57E | 36°x45° Bearings | 30.2mm x 41mm x 7.1mm Upper | 40mm x 51.8mm x 7.5mm Lower | 1.5" Crown Race
- Component Cassette
- Shimano Deore 11-51T 11spd
- Component Crankset
- Rocky Mountain Microdrive 2 PC | 32T | 24mm Spindle | 170mm Crank Length
- Component Shifters
- Shimano Deore 11spd
- Component Handlebar
- Rocky Mountain AM | 780mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 31.8mm Clamp
- Component Seat Post
- Rocky Mountain Toonie Drop Composite 30.9mm | XS - SM = 125mm | MD - LG = 150mm | XL = 170mm
- Component Chainrings
- 32T
- Component Front Tire
- WTB Trail Boss Comp 27.5 x 2.4
- Component Rear Shock
- RockShox Deluxe Select+ | Sealed Bearing Eyelet | 25x8mm F Hardware | 210x55mm | Size-Specific tune in FAQ
- Component Tape Grips
- Rocky Mountain Lock On Light
- Component Bottom Bracket
- Rocky Mountain Sealed BB92 - Shimano Compatible
- Component Rear Derailleur
- Shimano Deore 11spd
- Rear Shock
- RockShox Deluxe Select+ | Sealed Bearing Eyelet | 25x8mm F Hardware | 210x55mm | Size-Specific tune in FAQ
- Hubs
- Front: Shimano MT410 | 15mm Boost Rear: Shimano MT400 Boost 148mm | RMB Axle | 163mm x 12mm x 1.5mm
- Crankset
- Rocky Mountain Microdrive 2 PC | 32T | 24mm Spindle | 170mm Crank Length
- Pedals
- Sold separately
- Bottom Bracket
- Rocky Mountain Sealed BB92 - Shimano Compatible
- Chain
- KMC X11-1
- Saddle
- WTB Volt | Steel Rails | 142mm Width
- Handlebar
- Rocky Mountain AM | 780mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 31.8mm Clamp
- Headset
- FSA Orbit NO.57E | 36°x45° Bearings | 30.2mm x 41mm x 7.1mm Upper | 40mm x 51.8mm x 7.5mm Lower | 1.5" Crown Race
- Rear Derailleur
- Shimano Deore 11spd
- Stem
- Rocky Mountain 31.8 AM | 5° Rise | All Sizes = 40mm
- Brakes
- Shimano MT200 2 Piston | Resin Pads | RT30 180mm F Rotor | RT30 180mm R Rotor
- Cassette
- Shimano Deore 11-51T 11spd
- Chainrings
- 32T
- Fork
- RockShox Recon Silver RL 150mm | 37mm Offset
- Frame
- FORM Alloy. Full Sealed Cartridge Bearings. Press Fit BB92. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9 Adjustable Geometry + Suspension Rate FORM Alloy Rear Triangle
- Seat Post
- Rocky Mountain Toonie Drop Composite 30.9mm | XS - SM = 125mm | MD - LG = 150mm | XL = 170mm
- Shifters
- Shimano Deore 11spd
- Tape/Grips
- Rocky Mountain Lock On Light
- Color
- Purple/Black
- Size
- X-Large
- Front Tire
- WTB Trail Boss Comp 27.5 x 2.4
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.