Rear spring rate for 2004 WR450F with YamaLink lowering

Our reply to a YamaLink customer about which spring rate for his 185 pound weight. Answer: A 2004 WR450F with a 205 pound rider weight (10% factored in) would get a 5.8 kg/mm spring.

Your dealer or any company like Race Tech, Factory Connection, etc. There are a handful online or mailorder who sells springs for pretty much every bike. If you're in between spring rates after figuring out body weight + 10% we recommend going for the higher spring rate. Example: you now need a 6.1 but the spring rates are only 6.0 and 6.2 kg/mm, get the 6.2 spring