KTM SX125 DID Chain JT Front & Rear Sprocket Kit Standard 13T/50T 1991-2025

This chain and sprocket kit includes

• x1 D.I.D Gold and Black 520 x 120 chain
• x1 RFX Front steel sprocket 13 T
• x1 JT Rear sprocket 50 T (Orange)

CHAIN

• Solid rollers
• Shot-peened parts
• Reduced Friction
• Special alloy steel
• Made in Japan
• Drive Chain Grade -Standard
• Pitch - 520
• Length -120 Link
• Colour - Gold & Black

FRONT SPROCKET

RFX Front Sprockets are CNC Machined from High Tensile Steel and case hardened to 60 Rockwell to resist wear. RFX sprockets also feature lightening holes on selected models but only when durability will not be affected.

• CNC Machined to extremely tight tolerances 
• Case Hardened and core refined Alloy steel that gives you the best strength and durability.

REAR SPROCKET

• Made from 7075-T6 Aluminium Alloy
• Fully heat treated for higher wear resistance
• Meets Japanese OEM standards
• Optimum design for light weight and strength
• JT sprockets used by top teams in - British Superbike Championship, Isle of Man TT, EU and British MX Championships & many more!
• is the world's leading manufacturer of aftermarket sprockets, constantly raising the industry's standards for quality and service. Committed to supplying the most durable, best quality sprockets available in the marketplace worldwi