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HOME > 01-BIG BORE PARTS > BIG BORE KIT / PISTON KIT FOR GROM (JC61) SERIES

COMING BACK WITH MOLYBDENUM COAT FINISH !

POWER PACK125

Main model

GROM（JC61）

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RELATED ITEM

Type

Code NO

Tax in price

Price

JAN Code NO

VERSION2 / WITH TYPE1 CAMSHAFT（DISCONTINUED）

355-1432110

¥37,400

¥34,000

4990852107858

VERSION2 / WITH TYPE2 CAMSHAFT（DISCONTINUED）

355-1432210

¥37,400

¥34,000

4990852107865

Product description

A COMPLETE KIT OF HIGH COMPRESSION PISTON, HIGH CAMSHAFT & I-MAP. POWER / TORQUE INCREASES DRAMATICALLY WITH SAME DISPLACEMENT.
HIGH PERFORMANCE MUFFLER (SOLD SEPARATELY) REQUIRED.
HIGH COMP PISTON KIT (PISTON / GASKET SET INCLUDED) ALSO RELEASED.

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Applicable model

GROM

JC61

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Notes

○BORE：φ52.4
○PISTON：FORGED PISTON WITH MOLYBDENUM COAT FINISH
○COMPRESSION RATIO：12.2：1（STOCK 9.3：1）
○NON-LEAD PREMIUM GASOLINE TYPE
※STOCK MUFFLER, STOCK CAMSHAFT NOT USABLE
※HIGH CAMSHAFT INCLUDED IN THE KIT DOES NOT HAVE DE-COMP FUNCTION.
※OIL COOLER KIT & CLUTCH COVER KIT REQUIED

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Comment

2026/04/23　ver.2/ WITH HIGH CAM SHAFT TYPE1（355-1432110）DISCONTINUED.
2026/04/22　ver.2/ WITH HIGH CAM SHAFT TYPE2（355-1432210）DISCONTINUED.

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