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Product image 1HONDA GROM 2014-20 / MONKEY 19-20 / SUPER CUB 2019 Camshaft ST-1M
Product image 2HONDA GROM 2014-20 / MONKEY 19-20 / SUPER CUB 2019 Camshaft ST-1M
Product image 3HONDA GROM 2014-20 / MONKEY 19-20 / SUPER CUB 2019 Camshaft ST-1M
Product image 4HONDA GROM 2014-20 / MONKEY 19-20 / SUPER CUB 2019 Camshaft ST-1M
Product image 5HONDA GROM 2014-20 / MONKEY 19-20 / SUPER CUB 2019 Camshaft ST-1M

*Product may vary by application

HONDA GROM 2014-20 / MONKEY 19-20 / SUPER CUB 2019 Camshaft ST-1M

SKU: 211-40A-2150

Regular price $249.00

MADE IN JAPAN


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Race Series


By filling out the form below you acknowledge that the item being purchased is for racing only and this vehicle will never be used on public roads or land.

The product that you are purchasing is designed and intended for closed course competition use only and is labeled as such, i.e. Yoshimura "RACE SERIES." Yoshimura RACE SERIES products are neither designed nor intended for use on PUBLIC ROADS or LAND. Such use is prohibited by Federal and State regulations.

I have read, understood, and agree to Use Restriction Terms.



(Payment Options Available at Check Out)


Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "MODIFIED PART"


WARNING: Cancer and Reproductive harm - www.p65warnings.ca.gov


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.

Camshaft Specifications
  • Type: ST-1M
  • MAX LIFT(mm): IN 6.25mm/EX 6.25mm
  • 1mm DURATION(): IN 225/EX 220
  • 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

Vehicle Fitment

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