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Get more power and torque with premium quality European big bore kits that include, cylinder, piston, rings, and all gaskets required for a hassle free conversion. Spare pistons, rings, and gaskets a...

Get more power and torque with premium quality European big bore kits that include, cylinder, piston, rings, and all gaskets required for a hassle free conversion.

Spare pistons, rings, and gaskets also available.

Not all products are listed here - check the downloads section for a complete application list. Kits not in stock can usually be supplied in three to four weeks, depending on availability at the factory.

Get more power and torque with premium quality European big bore kits that include, cylinder, piston, rings, and all gaskets required for a hassle free conversion.

Spare pistons, rings, and gaskets also available.

Not all products are listed here - check the downloads section for a complete application list. Kits not in stock can usually be supplied in three to four weeks, depending on availability at the factory.

Sku
Product Name
Price
Picture of BIG BORE KIT KX250F 04-08, RMZ250 04-06 GAC 0510100004
BIG BORE KIT KX250F 04-08, RMZ250 04-06
BIG BORE KIT KX250F 04-08. RMZ250 04-06
Availability: Out of stock
$1,595.00
Picture of BIG BORE KIT SUZUKI RMZ250 07-09 GAC 0510100010
BIG BORE KIT SUZUKI RMZ250 07-09
BIG BORE KIT SUZUKI RMZ250 07-09
Availability: In stock
$1,200.00
Picture of BIG BORE KIT SUZUKI RMZ250 10-14 d.83 GAC 0510100020
BIG BORE KIT SUZUKI RMZ250 10-14 d.83
BIG BORE KIT SUZUKI RMZ250 '10-'16 d.83
Availability: In stock
$1,350.00
Picture of BIG BORE KIT KLX400 03-06, DRZ400 00-12 LTZ400 ATV 03-12 GAC 0510100002
BIG BORE KIT KLX400 03-06, DRZ400 00-12 LTZ400 ATV 03-12
BIG BORE KIT KAWASAKI/SUZUKI VARIOUS ENDURO/QUAD-ATV 94mm/435cc
Availability: Out of stock
$1,595.00
Picture of BIG BORE KIT SUZUKI LTR490 06/10 GAC 0510100008
BIG BORE KIT SUZUKI LTR490 06/10
BIG BORE KIT SUZUKI LTR490 06/10
Availability: Out of stock
$1,295.00
Picture of BIG BORE KIT SUZUKI RMZ450 d.100 '05/06 GAC 0510100006
BIG BORE KIT SUZUKI RMZ450 d.100 '05/06
BIG BORE KIT SUZUKI RMZ450 d.100 '05/06
Availability: Out of stock
$1,200.00
Picture of BIG BORE KIT RMZ450 d.100 2007 GAC 0510100012
BIG BORE KIT RMZ450 d.100 2007
BIG BORE KIT RMZ450 d.100 2007
Availability: Out of stock
$1,195.00
Picture of BIG BORE KIT SUZUKI RMZ450 450/490 08-12 GAC 0510100016
BIG BORE KIT SUZUKI RMZ450 450/490 08-12
BIG BORE KIT SUZUKI RMZ450 450/490 08-12
Availability: In stock
$1,499.00
Picture of BIG BORE KIT SUZUKI RMZ450 '13-16  Ø100 MM / 490 CC GAC 0510100028
BIG BORE KIT SUZUKI RMZ450 '13-16 Ø100 MM / 490 CC
BIG BORE KIT SUZUKI RMZ450 '13-16 DIAM.100 MM / 490 CC
Availability: In stock
$1,499.00
Picture of BIG BORE PISTON/RING KIT KAWA KX250F 04/08/RMZ250 4/6 GAC S4F08300003B
BIG BORE PISTON/RING KIT KAWA KX250F 04/08/RMZ250 4/6
BIG BORE PISTON/RING KIT KAWA KX250F 04/08/RMZ250 4/6
Availability: In stock
$399.00
Picture of BIG BORE PISTON/RING KIT RMZ290 07-09 KX250F 09/10 GAC S4F08300007B
BIG BORE PISTON/RING KIT RMZ290 07-09 KX250F 09/10
BIG BORE PISTON/RING KIT RMZ290 '07-'16 / KX250F '09-'16
Availability: In stock
$399.00
Picture of BIG BORE PISTON/RING KIT DRZ400 00/09/KAWA KLX400 03/06 GAC S4F09400002B
BIG BORE PISTON/RING KIT DRZ400 00/09/KAWA KLX400 03/06
BIG BORE PISTON/RING KIT DRZ400 00/09/KAWA KLX400 03/06
Availability: In stock
$399.00
Picture of BIG BORE PISTON/RING KIT SUZUKI LTR490 07-10 GAC S4F100000130
BIG BORE PISTON/RING KIT SUZUKI LTR490 07-10
BIG BORE PISTON/RING KIT SUZUKI LTR490 07-10
Availability: In stock
$395.00
Picture of BIG BORE PISTON/RING KIT SUZUKI RMZ450 05/07 GAC S4F10000012B
BIG BORE PISTON/RING KIT SUZUKI RMZ450 05/07
BIG BORE PISTON/RING KIT SUZUKI RMZ450 05/07
Availability: In stock
$369.00
Picture of BIG BORE PISTON KIT SUZUKI RMZ450 08/10 GAC S4F100000170
BIG BORE PISTON KIT SUZUKI RMZ450 08/10
BIG BORE PISTON KIT SUZUKI RMZ450 08/10
Availability: In stock
$399.00
Picture of BIG BORE GASKET SET KX250F 04/08/SUZUKI RMZ250 04/06 GAC 0510160004
BIG BORE GASKET SET KX250F 04/08/SUZUKI RMZ250 04/06
BIG BORE GASKET SET KX250F 04/08/SUZUKI RMZ250 04/06
Availability: In stock
$139.00
Picture of BIG BORE GASKET SET SUZUKI RMZ290 07-09 GAC 0510160010
BIG BORE GASKET SET SUZUKI RMZ290 07-09
BIG BORE GASKET SET SUZUKI RMZ290 07-09
Availability: In stock
$89.00
Picture of BIG BORE GASKET KIT Ø 83 MM RMZ250 10-12 GAC 0510160018
BIG BORE GASKET KIT Ø 83 MM RMZ250 10-12
BIG BORE GASKET KIT DIAM. 83mm RMZ250 '10-'16
Availability: In stock
$85.00
Picture of BIG BORE GASKET SET KLX400 03/06 ATV/DRZ 400 00/09 GAC 0510160002
BIG BORE GASKET SET KLX400 03/06 ATV/DRZ 400 00/09
BIG BORE GASKET SET KAWASAKI/SUZUKI VARIOUS ENDURO/QUAD-ATV
Availability: In stock
$159.00
Picture of TOP GASKET SET SUZUKI LTR490 06/10 GAC 0510160008
TOP GASKET SET SUZUKI LTR490 06/10
TOP GASKET SET SUZUKI LTR490 06/10
Availability: In stock
$99.00
Picture of BIG BORE GASKET SET SUZUKI RMZ450 d.100 05/06 GAC 0510160006
BIG BORE GASKET SET SUZUKI RMZ450 d.100 05/06
BIG BORE GASKET SET SUZUKI RMZ450 d.100 05/06
Availability: In stock
$99.00
Picture of BIG BORE GASKET SET SUZ RM490 07/08 GAC 0510160011
BIG BORE GASKET SET SUZ RM490 07/08
BIG BORE GASKET SET SUZ RM490 07/08
Availability: In stock
$95.00
Picture of BIG BORE GASKET SET SUZUKI RMZ450 08/10 GAC 0510160013
BIG BORE GASKET SET SUZUKI RMZ450 08/10
BIG BORE GASKET SET SUZUKI RMZ450 08/10
Availability: In stock
$139.00
Picture of RING SET YZ250F 01/10/WR250F 01/09/KX250F 04/10 RMZ250 04/09 GAC S41316133
RING SET YZ250F 01/10/WR250F 01/09/KX250F 04/10 RMZ250 04/09
RING SET YZ250F 01/10/WR250F 01/09/KX250F 04/10 RMZ250 04/09
Availability: In stock
$59.00
Picture of BIG BORE RING SET KLX400 03/06/DRZ 400 00/09 GAC S41316119
BIG BORE RING SET KLX400 03/06/DRZ 400 00/09
BIG BORE RING SET KLX400 03/06/DRZ 400 00/09
Availability: In stock
$69.00
Picture of RING SET CRF450R/X. RMZ450. TRX450R, KXF450, LTR450 GAC S41316062
RING SET CRF450R/X. RMZ450. TRX450R, KXF450, LTR450
RING SET CRF450R/X. RMZ450. TRX450R. KXF450. LTR450
Availability: In stock
$59.00
Picture of BIG BORE RING SET SUZUKI RMZ450 08/09 GAC S41316178
BIG BORE RING SET SUZUKI RMZ450 08/09
BIG BORE RING SET SUZUKI RMZ450 08/09
Availability: In stock
$55.00
Picture of BIG BORE KIT KX250F 04-08, RMZ250 04-06
BIG BORE KIT KX250F 04-08, RMZ250 04-06
BIG BORE KIT KX250F 04-08. RMZ250 04-06
Availability: Out of stock
$1,595.00
Picture of BIG BORE KIT SUZUKI RMZ250 07-09
BIG BORE KIT SUZUKI RMZ250 07-09
BIG BORE KIT SUZUKI RMZ250 07-09
Availability: In stock
$1,200.00
Picture of BIG BORE KIT SUZUKI RMZ250 10-14 d.83
BIG BORE KIT SUZUKI RMZ250 10-14 d.83
BIG BORE KIT SUZUKI RMZ250 '10-'16 d.83
Availability: In stock
$1,350.00
Picture of BIG BORE KIT KLX400 03-06, DRZ400 00-12 LTZ400 ATV 03-12
BIG BORE KIT KLX400 03-06, DRZ400 00-12 LTZ400 ATV 03-12
BIG BORE KIT KAWASAKI/SUZUKI VARIOUS ENDURO/QUAD-ATV 94mm/435cc
Availability: Out of stock
$1,595.00
Picture of BIG BORE KIT SUZUKI LTR490 06/10
BIG BORE KIT SUZUKI LTR490 06/10
BIG BORE KIT SUZUKI LTR490 06/10
Availability: Out of stock
$1,295.00
Picture of BIG BORE KIT SUZUKI RMZ450 d.100 '05/06
BIG BORE KIT SUZUKI RMZ450 d.100 '05/06
BIG BORE KIT SUZUKI RMZ450 d.100 '05/06
Availability: Out of stock
$1,200.00
Picture of BIG BORE KIT RMZ450 d.100 2007
BIG BORE KIT RMZ450 d.100 2007
BIG BORE KIT RMZ450 d.100 2007
Availability: Out of stock
$1,195.00
Picture of BIG BORE KIT SUZUKI RMZ450 450/490 08-12
BIG BORE KIT SUZUKI RMZ450 450/490 08-12
BIG BORE KIT SUZUKI RMZ450 450/490 08-12
Availability: In stock
$1,499.00
Picture of BIG BORE KIT SUZUKI RMZ450 '13-16  Ø100 MM / 490 CC
BIG BORE KIT SUZUKI RMZ450 '13-16 Ø100 MM / 490 CC
BIG BORE KIT SUZUKI RMZ450 '13-16 DIAM.100 MM / 490 CC
Availability: In stock
$1,499.00
Picture of BIG BORE PISTON/RING KIT KAWA KX250F 04/08/RMZ250 4/6
BIG BORE PISTON/RING KIT KAWA KX250F 04/08/RMZ250 4/6
BIG BORE PISTON/RING KIT KAWA KX250F 04/08/RMZ250 4/6
Availability: In stock
$399.00
Picture of BIG BORE PISTON/RING KIT RMZ290 07-09 KX250F 09/10
BIG BORE PISTON/RING KIT RMZ290 07-09 KX250F 09/10
BIG BORE PISTON/RING KIT RMZ290 '07-'16 / KX250F '09-'16
Availability: In stock
$399.00
Picture of BIG BORE PISTON/RING KIT DRZ400 00/09/KAWA KLX400 03/06
BIG BORE PISTON/RING KIT DRZ400 00/09/KAWA KLX400 03/06
BIG BORE PISTON/RING KIT DRZ400 00/09/KAWA KLX400 03/06
Availability: In stock
$399.00
Picture of BIG BORE PISTON/RING KIT SUZUKI LTR490 07-10
BIG BORE PISTON/RING KIT SUZUKI LTR490 07-10
BIG BORE PISTON/RING KIT SUZUKI LTR490 07-10
Availability: In stock
$395.00
Picture of BIG BORE PISTON/RING KIT SUZUKI RMZ450 05/07
BIG BORE PISTON/RING KIT SUZUKI RMZ450 05/07
BIG BORE PISTON/RING KIT SUZUKI RMZ450 05/07
Availability: In stock
$369.00
Picture of BIG BORE PISTON KIT SUZUKI RMZ450 08/10
BIG BORE PISTON KIT SUZUKI RMZ450 08/10
BIG BORE PISTON KIT SUZUKI RMZ450 08/10
Availability: In stock
$399.00
Picture of BIG BORE GASKET SET KX250F 04/08/SUZUKI RMZ250 04/06
BIG BORE GASKET SET KX250F 04/08/SUZUKI RMZ250 04/06
BIG BORE GASKET SET KX250F 04/08/SUZUKI RMZ250 04/06
Availability: In stock
$139.00
Picture of BIG BORE GASKET SET SUZUKI RMZ290 07-09
BIG BORE GASKET SET SUZUKI RMZ290 07-09
BIG BORE GASKET SET SUZUKI RMZ290 07-09
Availability: In stock
$89.00
Picture of BIG BORE GASKET KIT Ø 83 MM RMZ250 10-12
BIG BORE GASKET KIT Ø 83 MM RMZ250 10-12
BIG BORE GASKET KIT DIAM. 83mm RMZ250 '10-'16
Availability: In stock
$85.00
Picture of BIG BORE GASKET SET KLX400 03/06 ATV/DRZ 400 00/09
BIG BORE GASKET SET KLX400 03/06 ATV/DRZ 400 00/09
BIG BORE GASKET SET KAWASAKI/SUZUKI VARIOUS ENDURO/QUAD-ATV
Availability: In stock
$159.00
Picture of TOP GASKET SET SUZUKI LTR490 06/10
TOP GASKET SET SUZUKI LTR490 06/10
TOP GASKET SET SUZUKI LTR490 06/10
Availability: In stock
$99.00
Picture of BIG BORE GASKET SET SUZUKI RMZ450 d.100 05/06
BIG BORE GASKET SET SUZUKI RMZ450 d.100 05/06
BIG BORE GASKET SET SUZUKI RMZ450 d.100 05/06
Availability: In stock
$99.00
Picture of BIG BORE GASKET SET SUZ RM490 07/08
BIG BORE GASKET SET SUZ RM490 07/08
BIG BORE GASKET SET SUZ RM490 07/08
Availability: In stock
$95.00
Picture of BIG BORE GASKET SET SUZUKI RMZ450 08/10
BIG BORE GASKET SET SUZUKI RMZ450 08/10
BIG BORE GASKET SET SUZUKI RMZ450 08/10
Availability: In stock
$139.00
Picture of RING SET YZ250F 01/10/WR250F 01/09/KX250F 04/10 RMZ250 04/09
RING SET YZ250F 01/10/WR250F 01/09/KX250F 04/10 RMZ250 04/09
RING SET YZ250F 01/10/WR250F 01/09/KX250F 04/10 RMZ250 04/09
Availability: In stock
$59.00
Picture of BIG BORE RING SET KLX400 03/06/DRZ 400 00/09
BIG BORE RING SET KLX400 03/06/DRZ 400 00/09
BIG BORE RING SET KLX400 03/06/DRZ 400 00/09
Availability: In stock
$69.00
Picture of RING SET CRF450R/X. RMZ450. TRX450R, KXF450, LTR450
RING SET CRF450R/X. RMZ450. TRX450R, KXF450, LTR450
RING SET CRF450R/X. RMZ450. TRX450R. KXF450. LTR450
Availability: In stock
$59.00
Picture of BIG BORE RING SET SUZUKI RMZ450 08/09
BIG BORE RING SET SUZUKI RMZ450 08/09
BIG BORE RING SET SUZUKI RMZ450 08/09
Availability: In stock
$55.00