100WRH01 - Motorcycle Gear Set Wide Ratio.

Part Number:


100WRH01 is a wide-ratio gear set engineered and manufactured to exact specifications for direct replacement of the factory gears. ACT wide-ratio gears incrementally broaden second through fifth gear, allowing increased range for off-road riding or higher top speeds. All ACT wide-ratio gear sets are made of properly heat-treated and case-hardened, chrome-moly steel.

Experience more versatility, making the ride both easier and more enjoyable
Maximum life using heat-treated and case-hardened gear steel
Robustly engineered, precisely machined and precision ground
Recommended Use
Recommended for Street use, Dual Sport, Desert, or Supermoto
ACT Difference
Utilize the full, broad power band by incrementally spacing 2nd thru 5th gear ratios, using sprockets that make sense for all riding needs

What's Included?

Motorcycle Gear Set Wide Ratio


Part Number:
Motorcycle Gear Set Wide Ratio
Product Weight (lbs.):
Warranty (Product Warranty):
Ninety (90) Days from Retail Purchase

Installation Guide:

Download Installation Instructions (PDF)

Kit Specific Instructions:

Download Kit Specific Instructions (PDF)

Vehicle Fitment:

2002 Honda CRF450R 449cc U/K 2003 Honda CRF450R 449cc U/K 2004 Honda CRF450R 449cc U/K 2005 Honda CRF450R 449cc U/K 2006 Honda CRF450R 449cc U/K 2007 Honda CRF450R 449cc U/K 2008 Honda CRF450R 449cc U/K