Blackthorn 125 C GX Transmission is part playful, part precision. Its stiff carbon frame keeps you on-track through techy sections, and our trail geometry strikes a balance of composure on descents and pedaling comfort on climbs.
125mm of Split Pivot rear suspension pushes you to push your limits, with excellent pedaling efficiency, a supportive ride, and active performance even while braking so you don’t lose your line on a choppy descent. Paired with a 140mm Fox 34 Performance Elite fork, it has the travel to progress to some stouter lines.
Blackthorn also puts bigger trail days in reach with dedicated space for two bottles, your repair kit, and a top tube bag or computer mount — leave the hip pack at home. Topping it all off is SRAM’s GX Transmission drivetrain, a stalwart selection for its dead-accurate electronic shifting and bring-it-on durability.
Blackthorn’s ability to both thread the needle and cut loose make it one of the best all-around mountain bike options out there — riding is believing.
Frame
Blackthorn 125 Carbon
Color
Slate/Citrus
Suspension Fork
Fox 34 Performance Elite, 140mm
Rear Shock
Fox Float X Performance Elite
Headset
FSA Orbit 1.5E ZS NO.57E
Seatpost
TranzX REVERSE w/ GL Stealth MMX Lever, SM: 160mm travel; MD: 180mm travel; LG–XL: 210mm travel
Stem
Salsa 35.0 Guide Trail, 40mm
Grips/Bar Tape
WTB Wavelength Lock-On
Saddle
WTB Solano, Medium, Steel SL, Fusion Form
Handlebar
Race Face Turbine
Front Derailleur
N/A
Rear Derailleur
SRAM GX Eagle AXS Transmission
Cassette
SRAM GX Eagle Transmission, 10–52t, 12-speed
Chain
SRAM GX Eagle Transmission Flattop
Crankset
SRAM GX Eagle Transmission, 30t w/ MRP 1x iO SL ISCG-05 aluminum bashguard
Shifter
SRAM AXS Pod controller, Right, w/ MatchMaker X Clamp
Brake Levers
SRAM Code Bronze Stealth
Brake Calipers
SRAM Code Bronze Stealth
Bottom Bracket
SRAM DUB BSA 73mm MTB Wide
Rotors
SRAM CenterLine 2.0 (6-bolt, 200mm front, 180mm rear)
Front Tire
Teravail Clifty, 29 x 2.5", Durable casing, WTB TCS Sealant Included
Rear Tire
Teravail Drawpoint, 29 x 2.5", Durable casing, WTB TCS Sealant Included
Front Hub
WTB Frequency 15 x 110mm
Rear Hub
WTB Frequency 12 x 148mm
Spoke
Butted steel, black
Rim
WTB ASYM i30 TCS, 28h
*Specifications are subject to change without notice
| Size | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| A. Effective Top Tube | 587.0- 588.0 | 609.0- 610.0 | 631.0- 632.0 | 653.0- 654.0 |
| B. Stand Over | 736.0- 733.0 | 736.0- 733.0 | 737.0- 733.0 | 737.0- 733.0 |
| C. Reach | 462.0- 458.0 | 482.0- 478.0 | 502.0- 498.0 | 521.0- 518.0 |
| D. Stack | 605.0- 609.0 | 614.0- 617.0 | 623.0- 626.0 | 632.0- 635.0 |
| E. Total Seat Tube Length | 405.0 | 430.0 | 455.0 | 480.0 |
| F. Headtube Length | 100.0 | 110.0 | 120.0 | 130.0 |
| G. Headtube Angle |
64.7
-
64.4
|
64.7
-
64.4
|
64.7
-
64.4
|
64.7
-
64.4
|
| H. Seat Tube Angle |
78.3
-
77.9
|
78.3
-
77.9
|
78.3
-
77.9
|
78.2
-
77.9
|
| I. BB Drop | 32.0- 36.0 | 31.0- 36.0 | 31.0- 36.0 | 31.0- 36.0 |
| J. BB Height | 344.0- 340.0 | 345.0- 340.0 | 345.0- 340.0 | 345.0- 340.0 |
| K. Chainstay Length | 432.0- 433.0 | 432.0- 433.0 | 432.0- 433.0 | 432.0- 433.0 |
| L. Fork Length Axle to Crown | 571.0 | 571.0 | 571.0 | 571.0 |
| M. Fork Offset | 43.0 | 43.0 | 43.0 | 43.0 |
| N. Wheelbase | 1211.0- 1211.0 | 1236.0- 1235.0 | 1260.0- 1260.0 | 1283.0- 1284.0 |
| Crank Arm Length | 165.0 | 165.0 | 170.0 | 170.0 |
| Handlebar Width | 760.0 | 800.0 | 800.0 | 800.0 |
| Recommended Rider Height | 157.0 - 170.0 | 168.0 - 180.0 | 178.0 - 191.0 | 188.0 - 201.0 |
| Stem Length | 40.0 | 40.0 | 40.0 | 40.0 |
