Ironman Rear Sprocket CR 125, CRF 250 X, CRF 250 R, CR250, CR500, XR 250, XR 400, CRF 450R, CRF 450X, 650R (84-14))



  • High quality heat-treated chrome-moly steel which is 2.5 times stronger than steel and 3 times stronger than 7075 alloy.
  • 250,000 psi material in a protective nickel finish.
  • "Closed Truss" design on rear sprockets more evenly distributes stresses in the rare event of a missing sprocket bolt. This decreases stress levels everywhere, allowing for an overall decrease in weight.
  • Countershaft (front) sprockets are made of shock-resistant die steel, much stronger than "case hardened" steel.
  • Ironman sprockets come with a 1-Year manufacturer guarantee against wear! That's right! We're so confident your Ironman Sprocket will outlast anything you've ridden before, Ironman guarantees it against wear for a full year!
  • Absolutely the toughest racing sprockets made.
  • U.S. Made. Why buy multiple fast wearing aluminum sprockets just to save a few ounces. Iromans last forever.
  • Don't see your model or teeth size? Call! We carry the complete line of Ironman Sprockets!

Fitment 1984-2019:
• CR 125
• CRF 250 X
• CRF 250 R
• CR 250 R
• CR 500 R
• XR 250
• XR 400
• CRF 450R, 450RX, 450X & 450L
(00-08) XR 650R ONLY!!!  (WILL NOT FIT XR 600 OR XL 650L) 

Please Choose:

Available Teeth:

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  • Model: IMR-HO1
  • Shipping Weight: 2lbs
  • Manufactured by: Ironman

This product was added to our catalog on Sunday 03 January, 2010.

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