Thunderbolt Trail Mountain Bike
Thunderbolt Trail Mountain Bike
Built to order
Your Cobalt is prepared for you. Timing varies with frame availability, paint, and component selection. Contact us for a current delivery estimate.
Build Ride Inspire
Thunderbolt is the 150 mm front / 150 mm rear trail bike for riders who build their routes around the descent. Its longer-travel platform suits rough singletrack, steep sections and repeated trail hits while retaining gearing for the climb back up. Choose it when control and suspension support on demanding trails matter more than the lighter, sharper XC character of Diablo or Hellbender. Select the build tier around your riding and component priorities; Elite offers SRAM and Shimano choices without Flight Attendant.
Choose your build
| Build | Price (USD) | SRAM drivetrain | Shimano drivetrain | Fork / suspension | Wheels |
|---|---|---|---|---|---|
| Core | $4,499 | Eagle 90 T-Type | Deore 12-speed | Lyrik Select + Deluxe Select+ | Alloy trail |
| Performance | $5,899 | GX Eagle AXS T-Type | XT Di2 Wireless 12-Speed | Lyrik Ultimate + Super Deluxe Ultimate | Carbon trail |
| Elite | $7,399 | XX Eagle AXS T-Type | XTR Di2 Wireless 12-Speed | Lyrik Ultimate + Super Deluxe Ultimate | Premium carbon trail |
SRAM and Shimano builds share the same tier price. Select your build tier, size and finish, then confirm your drivetrain preference with Cobalt. Saddle, tires, gearing and cockpit can be tailored to fit, terrain and budget. Comparable substitutions and custom work are confirmed before the build is finalized. Photographs show individual builds; components and finishes may differ from your selected package.
Mountain bike builds include a tubeless setup.
Choose your finish
Matte Black / White Decals — Included
Gloss Blue / Black Decals — Included
Custom 1-Color — +$250
Custom 2-Color — +$400
Premium / Complex Paint — Contact us for a quote
Explore custom paint colors and options.
Frame specifications
| Detail | Specification |
|---|---|
| Frame | Toray carbon with EPS construction |
| Sizes | S, M, L, XL |
| Travel | 150 mm front / 150 mm rear |
| Shock | 205 × 60 mm trunnion |
| Tire clearance | 29 × 2.6 in or 27.5 × 2.8 in |
| Bottom bracket | BSA 73 mm threaded |
| Seatpost | 30.9 mm; dropper compatible |
| Rear axle | 12 × 148 mm Boost |
| Drivetrain | UDH / SRAM T-Type |
| Routing & mounts | Internal routing; one bottle mount |
Published frame weights are reference values and vary with size and finish.
Geometry & sizing
Use the model-specific chart below with your fit measurements. Dimensions are in millimeters unless shown otherwise.
| Size | Seat tube (mm) | Seat angle (°) | Effective top tube (mm) | Head tube (mm) | Head angle (°) | Fork length (mm) | Wheelbase (mm) | Front center (mm) | Chainstay (mm) | BB drop (mm) | Stack (mm) | Reach (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | 380 | 78 | 562 | 105 | 64.5 | 572 | 1210 | 770 | 440 | 20 | 610 | 432 |
| M | 410 | 77.9 | 590 | 115 | 64.5 | 572 | 1239 | 799 | 440 | 20 | 619 | 457 |
| L | 440 | 77.8 | 615 | 125 | 64.5 | 572 | 1265 | 826 | 440 | 20 | 628 | 479 |
| XL | 470 | 77.7 | 640 | 135 | 64.5 | 572 | 1260 | 851 | 440 | 20 | 637 | 500 |
The source lists an XL wheelbase of 1,260 mm. Confirm this measurement with Cobalt before making a fit decision.
Your Cobalt, your way
Explore standard finishes and custom paint or talk with Cobalt about your build.
Cobalt full-suspension frames carry a five-year frame warranty. Read warranty coverage and terms.
Build Ride Inspire
Ordering & delivery
Typical custom builds take about 3–4 weeks to source components, assemble and ship, depending on component availability. Custom paint can take longer. Complete bikes ship free within the lower 48 U.S. states; confirm international and special shipping with Cobalt. Read ordering, assembly and return details.