Blackthorn 125 C Deore 12 is a carbon trail bike with balance. Its carbon frame lightens your load and makes for a responsive ride, while 125mm of Split Pivot suspension delivers efficient pedaling, predictable braking, and excellent traction throughout its travel. A RockShox Pike fork adds 140mm trail-smoothing travel up front for a bike capable of bold lines or techy features. Our trail geometry is equal parts downhill confidence and climbing comfort for an all-around excellent ride.

Blackthorn’s on-bike cargo mounts make longer trail days more manageable, with dedicated space for two bottles, your repair kit, and our EXP-R Series Trillium Top Tube Bag or a K-Edge computer mount. The Shimano Deore 12-speed drivetrain is one you can count on to shift flawlessly and always have the gear range to grunt up the steepest climbs.

Blackthorn 125 C Deore 12 is the best carbon trail bike if your rides often include a side of adventure (or you want them to).

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  Split Pivot +

  • Multiple travel classes in one chassis provides riders with the opportunity to adapt their bikes to various adventures

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• 

  Flip Chip

  • Provides the ability to alternate wheel and tire sizes
  • Riders can adjust for their terrain, or desired handling characteristics

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• 

  Suspension Kinematics

  • Lively, responsive ride feel with good bottom-out resistance
  • Free, active, and uniform suspension feel under braking
  • Efficient pedaling, stellar climbing traction, supple small-bump performance
  • Tunable for all riders

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  On-Bike Storage

  • Adventures require gear and riders should get to choose whether they carry it on their bike or on their body

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  Frame Protection

  • Our products are built from experience — we’ve been there enough to know that a carbon fork can benefit from added protection just as much as the downtube on a suspension bike.

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  Frameset

  Frame

  Blackthorn 125 Carbon

  Color

  Coffee Black/Smoke

  Suspension Fork

  RockShox Pike, 140mm

  Rear Shock

  RockShox Super Deluxe

  Components

  Headset

  FSA Orbit 1.5E ZS NO.57E

  Seatpost

  TranzX YSI05 RAD+ w/ Shimano SL-MT500 I-Spec EV Lever, SM: 150mm travel; MD–LG: 170mm travel; XL: 200mm travel

  Stem

  Salsa 35.0 Guide Trail, 40mm

  Grips/Bar Tape

  Salsa File Tread Lock-on

  Saddle

  WTB Solano, Medium, Steel Rail, Fusion Form

  Handlebar

  Race Face Chester

  Drivetrain

  Front Derailleur

  N/A

  Rear Derailleur

  Shimano Deore M6100–SGS

  Cassette

  Shimano Deore M6100, 10–51t, 12-speed

  Chain

  Shimano Deore M6100, HYPERGLIDE+

  Crankset

  Shimano Deore MT512, 30t w/ MRP 1x SL ISCG-05 bashguard

  Shifter

  Shimano Deore M6100, I-Spec EV

  Brake Levers

  Shimano Deore M6100

  Brake Calipers

  Shimano Deore M6120, 4-piston

  Bottom Bracket

  Shimano MT501

  Rotors

  Shimano Deore RT64 (Center Lock, 203mm front, 180mm rear)

  Wheels

  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

  Shimano TC500 15 x 110mm

  Rear Hub

  Shimano TC500 12 x 148mm

  Spoke

  Butted steel, black

  Rim

  WTB ASYM i30 TCS, 28h

  *Specifications are subject to change without notice

  Geometry

  

   

  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	780.0	780.0	780.0	780.0
  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

  Measurements based on:

  • an unsprung bike (no sag)
  • a 29 x 2.5" tire measuring 752mm in diameter
  • Standover is measured from vertically from ground to top of top tube 50mm forward of bottom bracket center
  • Note: Where two measurements are listed, the first number is with Flip Chip in default High position; the second number is with Flip Chip in Low position

  Frame Specs

  • Design Wheel/Tire Sizes55–63.5mm (2.2–2.5")
  • Alternate Wheel/Tire Sizes63–70mm (2.5–27.75")
  • Max Tire Outer Diameter Frame: 29 x 2.5"
    Fork: Max Tire Diameter: 732 mm / Max Tire Width: 81mm
  • Frame ConstructionBlackthorn 125 Carbon
  • Suspension Fork Length (Travel)160mm
  • Fork Offset44mm
  • Axle to Crown573mm
  • Rear Spacing12 x 148mm
  • Rear Axle Size12 x 188mm, TP=1.0, TL=20
  • Front Brake (Rotor)74mm Postmount (180-220mm rotor)
  • Headset - UpperZS44/28.6
  • Headset - LowerZS56/40
  • Rear Shock Size190 x 45mm
  • Shock Mount, ForeØ10 x 30mm
  • Front Spacing15 x 110mm
  • Front Axle SizeFox Kabolt: 15 x 155mm, TP=M14 x 1.5, TL=12mm
  • Steerer Tube1.125–1.5" Tapered
  • Crown Race59mm
  • Stem ClampØ35.4mm
  • SeatpostØ30.9mm
  • Dropper Post CompatibleYes (internal)
  • Max Post InsertionSM: 215mm; MD: 240mm; LG: 265mm; XL: 290mm
  • Derailluer HangerSRAM UDH
  • Bottom Bracket73mm BSA
  • Crankset (Max Ring)34t (55mm)
  • Accessory MountsTop Tube (top side) Accessory Mounts: One
  • Bottle MountsOne full size bottle
  • Fork MountsNone
  • Front Fender MountsNone
  • Rear Fender MountsNone