Keng Engine

🔥 CRF 410cc Big Bore Dyno Test — Just the Beginning!

This is a CRF engine upgraded to 410cc, tested on the dyno with an 18-inch rear wheel.

Current result:
✔ Max Power: 49.14 HP @ 7,610 rpm
✔ Max Torque: 34.83 ft-lbs @ 6,610 rpm

And this setup is still not 100% complete yet.

During dyno tuning, we found an issue with the 2nd injector system, so the bike needs to come back for correction and another dyno test.

I don’t even want to imagine how much more power it could show if this bike was tested with a 17-inch wheel… or even a 12-inch wheel.

This is only the beginning.
More testing, more tuning, and more power are coming soon.

Follow Keng Engine for the next update 🔥

Keng Engine Chiang Mai 🇹🇭
Real Dyno. Real Results.

BILLET CLUTCH KIT – 6 PLATES / 6 SPRINGS 🔥
Upgrade your clutch performance to the next level.
✔️ Stronger grip
✔️ Smoother engagement
✔️ More reliable under high power
Fitment:
CRF250 • CRF300L • CBR250 • CBR300 • CB300F • CB300
👉 2 Options Available
Option 1 – Kit Only (Without Clutch Basket)
You need to machine the basket deeper by 1.00 mm
Option 2 – Complete Set (Ready to Install)
No modification required
👉 Just bolt on & ride
💪 Perfect for big bore / high performance engines
📩 Message us now for more details
KENG ENGINE 🔧