The Blackthorn 145 C frameset is your canvas for a dreamy all-mountain rig. The stiff carbon fiber frame improves your power transfer on flats and climbs, aided by 145mm of Split Pivot rear suspension travel with a supple yet supportive ride with superb pedaling efficiency, well-suited to the huge variety of trails you’ll be tackling. Our all-mountain geometry puts you in a confident position for descents and a comfortable position for the pedaly parts of the trail.
On-bike cargo mounts let you configure your setup with space for two bottles and your repair kit, plus snacks and more via the top tube mounts. Blackthorn carbon all-mountain frame give you plenty to build on — just add your favorite parts and go make an epic day of it.
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
Rear Shock
Fox Float X Factory, 210 x 55mm
Components
Headset
FSA Orbit 1.5E ZS NO.57E
Drivetrain
Crankset
MRP 1x SL ISCG-05 bashguard
Wheels
*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 |
|
|
|
|
| Handlebar Width |
|
|
|
|
| Recommended Rider Height |
157.0 - 170.0 |
168.0 - 180.0 |
178.0 - 191.0 |
188.0 - 201.0 |
| Stem Length |
|
|
|
|
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 145 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 Size210 x 55mm
- Shock Mount, ForeØ10 x 30mm
- Front Spacing15 x 110mm
- Front Axle Size15 x 158mm, TP=1.5, TL=9mm
- Steerer Tube1.125–1.5" Tapered
- Crown Race59mm
- SeatpostØ30.9mm
- Dropper Post CompatibleYes (internal)
- Seatpost ClampØ35.4mm
- 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
