Blackthorn 145 C GX Transmission is the tool of choice for all-mountain adventures. The combo of a carbon frame, Split Pivot suspension, and our all-mountain geometry makes for a comfortable, confident ride both up and down the mountain.
145mm of Split Pivot suspension travel delivers superb small-bump compliance, remarkable climbing ability, and reliable traction even while braking. Paired with a Fox 36 Performance Elite 160mm fork, it’s a platform well-suited to the ups and downs of epic all-mountain rides. Blackthorn’s cargo capacity adds to its all-day capability, with space for two bottles, your tube and multitool, and mounts for our EXP-R Series Trillium Top Tube Bag or a K-Edge computer mount.
The SRAM GX Transmission drivetrain strikes a perfect balance with the precision and speed of electronic shifting and the durability of SRAM’s Full Mount derailleur design.
Saddle up and why Blackthorn 145 C DLX GX Transmission is the best all-mountain bike for chasing Adventure by Bike in the mountains.
Bike Key Features
-
Split Pivot Suspension System
- Allows us to tune the pedaling and braking forces independently
- Maximizes pedaling and braking performance without compromising either
- Results in optimal pedaling efficiency and traction when braking
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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 145 Carbon
Suspension Fork
Fox 36 Performance Elite, 160mm
Rear Shock
Fox Float X Performance Elite
Components
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
Drivetrain
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 Maven Bronze Stealth
Brake Calipers
SRAM Maven Bronze Stealth
Bottom Bracket
SRAM DUB BSA 73mm MTB Wide
Rotors
SRAM CenterLine 2.0 (6-bolt, 200mm front and rear)
Wheels
Front Tire
Teravail Clifty, 29 x 2.5", Durable casing, WTB TCS Sealant Included
Rear Tire
Teravail Clifty, 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
Double butted Pillar stainless steel, black
Rim
WTB KOM Tough i30 TCS, 32h
*Specifications are subject to change without notice
Geometry
Size |
Small |
Medium |
Large |
X-Large |
A. Effective Top Tube |
589.0- 590.0 |
611.0- 612.0 |
633.0- 634.0 |
655.0- 656.0 |
B. Stand Over |
746.0- 743.0 |
746.0- 743.0 |
747.0- 743.0 |
747.0- 743.0 |
C. Reach |
452.0- 449.0 |
472.0- 469.0 |
492.0- 489.0 |
512.0- 509.0 |
D. Stack |
612.0- 615.0 |
621.0- 624.0 |
630.0- 633.0 |
639.0- 642.0 |
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 |
63.9
-
63.6
|
63.9
-
63.6
|
63.9
-
63.6
|
63.9
-
63.6
|
H. Seat Tube Angle |
77.4
-
77.1
|
77.4
-
77.1
|
77.4
-
77.1
|
77.4
-
77.1
|
I. BB Drop |
25.0- 30.0 |
25.0- 30.0 |
25.0- 30.0 |
25.0- 30.0 |
J. BB Height |
351.0- 346.0 |
351.0- 346.0 |
351.0- 346.0 |
351.0- 346.0 |
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 |
1219.0- 1220.0 |
1243.0- 1244.0 |
1268.0- 1269.0 |
1292.0- 1293.0 |
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 |
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