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RK GB520EXW Chain and Sprocket Kit - 4121-018SG

  • Part #: 805205
  • Manufacturer Part #: 4121-018SG
This item is no longer available

Overview of RK GB520EXW Chain and Sprocket Kit - 4121-018SG

  • Works quality RK Racing Chain all in one great package
  • RK chain features high carbon alloy steel solid rollers, bushings and pins
  • Pre-stressed and heat treated for maximum wear life and performance
  • Sprockets are computer-designed for self-cleaning
  • Front sprockets are made from case-hardened steel, rear sprockets are constructed of 7075 T6 aluminum
  • Sprockets meet maximum 0.2mm manufacturing tolerance
  • Sprocket snowflake design minimizes weight without sacrificing strength


Chain Type:GB520EXW

OEM Gearing:13-52
Quick Acceleration Gearing:13-51

NOTE: Gearing is for top end, not quick acceleration

Specs for RK GB520EXW Chain and Sprocket Kit - 4121-018SG

Chain Size 520
Number of Teeth 13 Front/51 Rear
Type Chain and Sprocket
Units Kit
Weight 7.50 lbs

Specs for RK GB520EXW Chain and Sprocket Kit - 4121-018SG

Chain Size 520
Number of Teeth 13 Front/51 Rear
Type Chain and Sprocket
Units Kit
Weight 7.50 lbs

Fitment for RK GB520EXW Chain and Sprocket Kit - 4121-018SG

See if this part fits your ride

Part 805205 fits the following machines

Yamaha
  • 2007 Yamaha WR250F
  • 2006 Yamaha WR250F
  • 2005 Yamaha WR250F
  • 2004 Yamaha WR250F
  • 2003 Yamaha WR250F
  • 2002 Yamaha WR250F
  • 2001 Yamaha WR250F
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Instructions and Manuals for RK GB520EXW Chain and Sprocket Kit - 4121-018SG