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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 g...

 

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 HONDA CRF250R 04/09 CRF 250 X '04-13 280cc GAC 0210100009
BIG BORE KIT HONDA CRF250R 04/09 CRF 250 X '04-13 280cc
BIG BORE KIT HONDA CRF250R 04/09 CRF 250 X '04-15 280cc
Availability: Out of stock
$1,400.00
Picture of BIG BORE KIT HONDA CRF250 R 10-15 GAC 0210100033
BIG BORE KIT HONDA CRF250 R 10-15
BIG BORE KIT HONDA CRF250 R 10-17
Availability: In stock
$1,400.00
Picture of BIG BORE KIT HONDA CRF450 R 02/08 490cc GAC 0210100001
BIG BORE KIT HONDA CRF450 R 02/08 490cc
BIG BORE KIT HONDA CRF450 R 02/08 490cc
Availability: Out of stock
$1,195.00
Picture of BIG BORE KIT CRF 450 R 09-14 490 CC GAC 0210100030
BIG BORE KIT CRF 450 R 09-14 490 CC
BIG BORE KIT CRF 450 R 09-16 490 CC
Availability: In stock
$1,295.00
Picture of BIG BORE KIT HONDA  CRF 450 X 05-14 GAC 0210100021
BIG BORE KIT HONDA CRF 450 X 05-14
BIG BORE KIT HONDA CRF 450 X 05-14
Availability: In stock
$1,495.00
Picture of BIG BORE KIT HONDA TRX450R ATV 06-14 490cc GAC 0210100017
BIG BORE KIT HONDA TRX450R ATV 06-14 490cc
BIG BORE KIT HONDA TRX 450 R/ER QUAD-ATV '06-'14 100mm/480cc
Availability: Out of stock
$1,195.00
Picture of BIG BORE PISTON/RING KIT CRF250R/X 04/09 GAC S4F08200003B
BIG BORE PISTON/RING KIT CRF250R/X 04/09
BIG BORE PISTON/RING KIT CRF250R '04-09/CRF 250 X 04-15
Availability: Out of stock
$395.00
Picture of BIG BORE PINSTON CRF 250 10-12 GAC S4F08200004B
BIG BORE PINSTON CRF 250 10-12
BIG BORE PINSTON CRF 250 10-16
Availability: In stock
$329.00
Picture of BIG BORE PISTON/RING KIT HONDA CRF450 02/08 TRX450R 06/09 GAC S4F10000007B
BIG BORE PISTON/RING KIT HONDA CRF450 02/08 TRX450R 06/09
BIG BORE PISTON/RING KIT HONDA CRF450 02/08 TRX450R 06/09
Availability: In stock
$419.00
Picture of BIG BORE PISTON 100 MM CRF 450 R 09-16 GAC S4F10000180
BIG BORE PISTON 100 MM CRF 450 R 09-16
BIG BORE PISTON 100 MM CRF 450 R 09-16
Availability: Out of stock
$359.00
Picture of BIG BORE PISTON 100 MM CRF 450 R 09-16 GAC S4F100000180
BIG BORE PISTON 100 MM CRF 450 R 09-16
BIG BORE PISTON 100 MM CRF 450 R 09-16
Availability: In stock
$399.00
Picture of BIG BORE GASKET SET CRF250R/X 04/09 280cc GAC 0210160007
BIG BORE GASKET SET CRF250R/X 04/09 280cc
BIG BORE GASKET SET CRF250R 04-09/X 04-15 280cc
Availability: In stock
$139.00
Picture of BIG BORE GASKET SET CRF 250 10-12 GAC 0210160024
BIG BORE GASKET SET CRF 250 10-12
BIG BORE GASKET SET CRF 250 10-16
Availability: In stock
$110.00
Picture of BIG BORE GASKET SET HONDA CRF450R 02/08 490cc GAC 0210160001
BIG BORE GASKET SET HONDA CRF450R 02/08 490cc
BIG BORE GASKET SET HONDA CRF450R 02/08 490cc
Availability: Out of stock
$159.00
Picture of BIG BORE GASKET SET CRF 450 11-12 GAC 0210160023
BIG BORE GASKET SET CRF 450 11-12
BIG BORE GASKET SET CRF 450 R 09-16
Availability: In stock
$149.00
Picture of BIG BORE GASKET SET HONDA CRF450 05/10 GAC 0210160016
BIG BORE GASKET SET HONDA CRF450 05/10
BIG BORE GASKET SET HONDA CRF450 05/10
Availability: In stock
$119.00
Picture of BIG BORE GASKET SET HONDA TRX490 06-09 GAC 0210160014
BIG BORE GASKET SET HONDA TRX490 06-09
BIG BORE GASKET SET HONDA TRX490 06-09
Availability: In stock
$149.00
Picture of TWO RING PISTON RING SET HONDA 250 d.82 GAC S41316089
TWO RING PISTON RING SET HONDA 250 d.82
TWO RING PISTON RING SET HONDA CRF 250 R '10-15 d.82
Availability: In stock
$55.00
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 THREE RING SET HONDA CRF250 04/09 try S41316089 GAC S41316103
BIG BORE THREE RING SET HONDA CRF250 04/09 try S41316089
BIG BORE THREE RING SET HONDA CRF250 04/09 try S41316089
Availability: In stock
$69.00
Picture of BIG BORE KIT HONDA CRF250R 04/09 CRF 250 X '04-13 280cc
BIG BORE KIT HONDA CRF250R 04/09 CRF 250 X '04-13 280cc
BIG BORE KIT HONDA CRF250R 04/09 CRF 250 X '04-15 280cc
Availability: Out of stock
$1,400.00
Picture of BIG BORE KIT HONDA CRF250 R 10-15
BIG BORE KIT HONDA CRF250 R 10-15
BIG BORE KIT HONDA CRF250 R 10-17
Availability: In stock
$1,400.00
Picture of BIG BORE KIT HONDA CRF450 R 02/08 490cc
BIG BORE KIT HONDA CRF450 R 02/08 490cc
BIG BORE KIT HONDA CRF450 R 02/08 490cc
Availability: Out of stock
$1,195.00
Picture of BIG BORE KIT CRF 450 R 09-14 490 CC
BIG BORE KIT CRF 450 R 09-14 490 CC
BIG BORE KIT CRF 450 R 09-16 490 CC
Availability: In stock
$1,295.00
Picture of BIG BORE KIT HONDA  CRF 450 X 05-14
BIG BORE KIT HONDA CRF 450 X 05-14
BIG BORE KIT HONDA CRF 450 X 05-14
Availability: In stock
$1,495.00
Picture of BIG BORE KIT HONDA TRX450R ATV 06-14 490cc
BIG BORE KIT HONDA TRX450R ATV 06-14 490cc
BIG BORE KIT HONDA TRX 450 R/ER QUAD-ATV '06-'14 100mm/480cc
Availability: Out of stock
$1,195.00
Picture of BIG BORE PISTON/RING KIT CRF250R/X 04/09
BIG BORE PISTON/RING KIT CRF250R/X 04/09
BIG BORE PISTON/RING KIT CRF250R '04-09/CRF 250 X 04-15
Availability: Out of stock
$395.00
Picture of BIG BORE PINSTON CRF 250 10-12
BIG BORE PINSTON CRF 250 10-12
BIG BORE PINSTON CRF 250 10-16
Availability: In stock
$329.00
Picture of BIG BORE PISTON/RING KIT HONDA CRF450 02/08 TRX450R 06/09
BIG BORE PISTON/RING KIT HONDA CRF450 02/08 TRX450R 06/09
BIG BORE PISTON/RING KIT HONDA CRF450 02/08 TRX450R 06/09
Availability: In stock
$419.00
Picture of BIG BORE PISTON 100 MM CRF 450 R 09-16
BIG BORE PISTON 100 MM CRF 450 R 09-16
BIG BORE PISTON 100 MM CRF 450 R 09-16
Availability: Out of stock
$359.00
Picture of BIG BORE PISTON 100 MM CRF 450 R 09-16
BIG BORE PISTON 100 MM CRF 450 R 09-16
BIG BORE PISTON 100 MM CRF 450 R 09-16
Availability: In stock
$399.00
Picture of BIG BORE GASKET SET CRF250R/X 04/09 280cc
BIG BORE GASKET SET CRF250R/X 04/09 280cc
BIG BORE GASKET SET CRF250R 04-09/X 04-15 280cc
Availability: In stock
$139.00
Picture of BIG BORE GASKET SET CRF 250 10-12
BIG BORE GASKET SET CRF 250 10-12
BIG BORE GASKET SET CRF 250 10-16
Availability: In stock
$110.00
Picture of BIG BORE GASKET SET HONDA CRF450R 02/08 490cc
BIG BORE GASKET SET HONDA CRF450R 02/08 490cc
BIG BORE GASKET SET HONDA CRF450R 02/08 490cc
Availability: Out of stock
$159.00
Picture of BIG BORE GASKET SET CRF 450 11-12
BIG BORE GASKET SET CRF 450 11-12
BIG BORE GASKET SET CRF 450 R 09-16
Availability: In stock
$149.00
Picture of BIG BORE GASKET SET HONDA CRF450 05/10
BIG BORE GASKET SET HONDA CRF450 05/10
BIG BORE GASKET SET HONDA CRF450 05/10
Availability: In stock
$119.00
Picture of BIG BORE GASKET SET HONDA TRX490 06-09
BIG BORE GASKET SET HONDA TRX490 06-09
BIG BORE GASKET SET HONDA TRX490 06-09
Availability: In stock
$149.00
Picture of TWO RING PISTON RING SET HONDA 250 d.82
TWO RING PISTON RING SET HONDA 250 d.82
TWO RING PISTON RING SET HONDA CRF 250 R '10-15 d.82
Availability: In stock
$55.00
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
Picture of BIG BORE THREE RING SET HONDA CRF250 04/09 try S41316089
BIG BORE THREE RING SET HONDA CRF250 04/09 try S41316089
BIG BORE THREE RING SET HONDA CRF250 04/09 try S41316089
Availability: In stock
$69.00