Cyber Week Sale Going on Now! Use Code Take20 at Check Out and receive an additional $20 off any Motor Vehicle purchase.

Excludes SSR PitBikes


420 Drive Chain | RK420M | Heavy Duty Racing chain

420 Drive Chain | RK420M | Heavy Duty Racing chain


Product Code: RK420M

Product Information


 Premium Replacement RK Brand 420M Chain (Choose your Length)

  • Made in Japan
  • A= 12mm / .54"
  • B= 7.6mm / .30"
  • C= 6.7mm / .26"



  • (1) Custom Length Drive Chain
  • (1) Connecting Link

Choose your size:

  • Use the Provided Diagram to help determine the number of links you will need.
  • Total number of links will include a connecting link as 1 link.
  • Choose you total number of links from the drop down menu below.

Product Features:

  • All RK chains are pre-stressed and pre-stretched to ensure equal load distribution and minimal maintenance.
  • Heat-treated medium carbon alloy steel construction.
  • All components heat-treated and shot-peened for maximum strength.
  • Two-point pin riveting and solid rollers.
  • For motorcycles up to 400cc that did not come with an O-ring or heavy-duty chain as standard equipment.
  • Wear Life Index std. as 100: 100
  • Tensile strength: 4200 lbs .
  • Disp. max cc's: Street 125cc  Dirt 125cc
  • Includes CLIP TYPE master link.

Stock Known Sizes:

  • TaoTao 125D = 80 Links
  • TaoTao 125H = 86 Links

Note: Some factory installed chains are very tight even with the chain adjuster all the way in. In these circumstances we recommend adding two links to the Link size (80 = 82 Links) Chain sizeing must be done in even numbers.

Please look carefully at the pictures provided. If you have any questions regarding fitment for a specific model please call 732-991-2194 for assistance.

Customer Reviews

This product hasn't been reviewed yet.

Write a review

Write Review

Please enter a valid email address.
This field is required.