DHM S1R Camshaft for the 2022-2024 Honda Grom / Monkey

Our S1R adds a bit more duration to our S1 cam which helps with top end power! When used with our 149cc big bore kit, there is little to no low end loss and performance is boosted throughout the mid and top RPM range. When used with the stock bore, you'll see a minor power loss under 5,500rpm with similar power up to 6,500 and then more power from then on up to the rev limiter. 

• Increased duration over our S1 cam provides more mid and high RPM power to pull higher top speeds with a strong mid range powerband. 
• No extreme lift numbers maintain compatibility with the stock valvetrain.
• Fits 2022-2024 Honda Grom / Monkey

ECU Flashes are in progress, currently we only have flashes for the following setups. Every other setup will require an aRacer to tune properly. 

**The tune for our S1 camshaft is not compatible with the S1R cam. If you have the S1 cam and decide to swap out to the S1R you will need an ECU update, available HERE. 

ECU Flashes available for:

• DHM 149 Gen 2 with S1R cam, Koso 34mm throttle body kit with AvailMS adapter, PCX150 injector, aftermarekt intake, aftermarket exhaust.
  
• Stock piston, DHM S1R camshaft, aftermarket intake, aftermarket exhaust

S1R Dyno Data -

Red: Stock piston, aftermarket intake, aftermarket exhaust, S1 Cam
Yellow: Stock piston, aftermarket intake, aftermarket exhaust, S1R Cam

HP

Torque:

Blue: DHM 149 Gen 2, S1R Cam, Koso 34mm TB with AvailMS adapter, PCX150 Injector, Aftermarket Intake, Aftermarket Exhaust

Brown: DHM 149 Gen 2, S1 Cam, Koso 34mm TB with AvailMS adapter, PCX150 Injector, Aftermarket Intake, Aftermarket Exhaust