Our camshafts are Made in Japan from premium materials. Our cams are precision ground from billet blanks using high-tolerance equipment, not welded and reground. These kits come complete and there's no need for additional purchases. When performance counts, trust Yoshimura.
- Type: ST-1M
- MAX LIFT(mm): IN 6.50mm/EX 6.50mm
- 1mm DURATION(): IN 250/EX 250
- Tappet Clearance(mm): IN 0.08-0.12mm/EX 0.08-0.12
- This camshaft requires fuel injection adjustment. Without remapping, full performance gain is not expected.
- Valve timing must be measured and adjusted when installing. *Cam timing should be set by a qualified mechanic to ensure proper function. Improper installation or cam timing could result in catastrophic engine failure.
- Tappet clearance must be measured and adjusted when installing.
Know you’re racing with the best.
Yoshimura R&D is the only authorized distributor in North America for our sister companies Yoshimura Japan (YJP) and Yoshimura Asia (YAT). YJP/YAT develop and test racing components that are un-restricted versions than the choked-down systems which are required for more restrictive marketplaces like Japan and Europe. This imported product is specially configured for less restrictive markets. In other words, you’re getting a custom exhaust that’s perfect for racing in the US market.
What your missing if you don’t buy U.S. spec through us!
- In-house warranty and technical support
- Certificate of authenticity
- Full 12-month warranty