4V Cylinder Head kit for Honda GROM®

$ 689.95

In stock

$ 689.95 USD

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4V Cylinder Head kit for Honda GROM®

Our Koso 4V Cylinder Head kit for Honda GROM® is the ideal engine part to complete the Koso Honda GROM® Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This new designed head is the perfect addition for those who desire more power and torque. The 4 Valve Cylinder Head Kit features a forged piston, stainless steel 24 mm intake valves and 20 mm exhaust valves. Feel the speed!

*Fit only Koso Big Bore kit.

Cylinder Height 64.2mm
Gasket Thickness Upper: 0.25mm
Bottom: 0.5mm
Piston Compression Height 19.5mm
Volume 169.21cc
Squish 1mm
Cylinder Head Titration 13.4cc
Compression Ratio 12.3:1
Valve Clearance / Tappet Clearance IN: 0.10mm
EX: 0.17mm
Camshaft 260 degree
Torque: 1.71
Horsepower: 26.26
*Measured without Air Filter & no Noise Reduction Plug

WARNING

THIS IS AN AFTERMARKET PART BUILT FOR RACING PURPOSES ONLY. KOSO IS NOT RESPONSIBLE FOR ANY DAMAGES CAUSED TO THE PARTS, VEHICLE, OR TO YOURSELF AND OTHERS.  ENGINE PARTS ARE NOT UNDER WARRANTY NOR IS COLLATERAL DAMAGE OR COST OF LABOR, IN CASES OF MALFUNCTION.

For more important tips and notes, see Honda GROM® FAQ page or download our Honda GROM® Caution PDF.

SKU: MC623000 Categories: , Tag: