Bicycle Archive · Specification report

2025 Salsa Blackthorn 125 C GX Transmission

Velopedia Archive ID 900000391

Overview

Model year	2025
Brand	Salsa
Model	Blackthorn 125 C GX Transmission
Bicycle type	Mountain
Archive ID	900000391
Original MSRP	$6,499.00
Colors	Slate/Citrus
Sizes	Small; Medium; Large; X-Large
Weight	31 lb. 9 oz.

Frameset

Frame construction	Carbon
Frame material	Carbon Fiber
Fork	Fox 36SL Performance Elite Float X2, 140mm

Drivetrain

Shifters	SRAM AXS Pod controller, Right, w/ MatchMaker X Clamp
Front derailleur	N/A
Rear derailleur	SRAM GX Eagle AXS Transmission
Crankset	SRAM GX Eagle Transmission, 30t w/ MRP 1x iO SL ISCG-05 aluminum bashguard
Bottom bracket	SRAM DUB BSA 73mm MTB Wide
Cassette	SRAM GX Eagle Transmission, 10–52t, 12-speed
Chain	SRAM GX Eagle Transmission Flattop

Brakes

Brakes	Brake Calipers: SRAM Code Bronze Stealth; Brake Levers: SRAM Code Bronze Stealth; Rotors: SRAM CenterLine 2.0 (6-bolt, 200mm front, 180mm rear)

Cockpit & contact points

Headset	FSA Orbit 1.5E ZS NO.57E
Handlebar	Race Face Turbine
Stem	Salsa 35.0 Guide Trail, 40mm
Saddle	WTB Solano, Medium, Steel SL, Fusion Form
Seatpost	TranzX REVERSE w/ GL Stealth MMX Lever, SM: 160mm travel; MD: 180mm travel; LG–XL: 210mm travel

Wheels & tires

Hubs	(F) WTB Frequency 15 x 110mm / (R) WTB Frequency 12 x 148mm
Rims	WTB ASYM i30 TCS, 28h
Spokes	Butted steel, black
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
Wheel size	29"; 27.5"

Geometry · Small

Seat tube	405 mm
Effective top tube	587 mm
Head tube	100 mm
Head-tube angle	64.7- 64.4
Seat-tube angle	78.3- 77.9
Chainstay / rear center	432 mm
Wheelbase	1211 mm
Bottom-bracket drop	32 mm
Bottom-bracket height	344 mm
Reach	462 mm
Stack	605 mm
Standover height	736 mm
Fork offset / rake	43 mm
Fork length / axle-to-crown	551 mm
Crank length	165 mm
Stem length	40 mm
Handlebar width	760 mm

Geometry · Medium

Seat tube	430 mm
Effective top tube	609 mm
Head tube	110 mm
Head-tube angle	64.7- 64.4
Seat-tube angle	78.3- 77.9
Chainstay / rear center	432 mm
Wheelbase	1236 mm
Bottom-bracket drop	31 mm
Bottom-bracket height	345 mm
Reach	482 mm
Stack	614 mm
Standover height	736 mm
Fork offset / rake	43 mm
Fork length / axle-to-crown	551 mm
Crank length	165 mm
Stem length	40 mm
Handlebar width	800 mm

Geometry · Large

Seat tube	455 mm
Effective top tube	631 mm
Head tube	120 mm
Head-tube angle	64.7- 64.4
Seat-tube angle	78.3- 77.9
Chainstay / rear center	432 mm
Wheelbase	1260 mm
Bottom-bracket drop	31 mm
Bottom-bracket height	345 mm
Reach	502 mm
Stack	623 mm
Standover height	737 mm
Fork offset / rake	43 mm
Fork length / axle-to-crown	551 mm
Crank length	170 mm
Stem length	40 mm
Handlebar width	800 mm

Geometry · X-Large

Seat tube	480 mm
Effective top tube	653 mm
Head tube	130 mm
Head-tube angle	64.7- 64.4
Seat-tube angle	78.2- 77.9
Chainstay / rear center	432 mm
Wheelbase	1283 mm
Bottom-bracket drop	31 mm
Bottom-bracket height	345 mm
Reach	521 mm
Stack	632 mm
Standover height	737 mm
Fork offset / rake	43 mm
Fork length / axle-to-crown	551 mm
Crank length	170 mm
Stem length	40 mm
Handlebar width	800 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on August 24, 2026.