Collection: Cylinder Works Motorcycle Cylinder & Big Bore Kits
Shop our range of Cylinder Works motorcycle cylinder kits, replacement cylinders and big bore kits for motocross, enduro, trail and off-road motorcycles.
Cylinder Works specialises in high-quality replacement cylinder assemblies and performance engine kits, offering solutions for riders rebuilding worn engines or upgrading engine displacement.
Explore our selection of Cylinder Works standard-bore cylinder kits, big bore kits and replacement engine components for popular motorcycle manufacturers including Honda, Yamaha, Kawasaki, Suzuki, KTM and other compatible off-road models.
Cylinder Works kits are designed to provide a convenient alternative to repairing or replating a worn original cylinder, with selected kits incorporating matched pistons, gaskets and associated components.
Whether you're rebuilding a motocross engine, replacing a damaged cylinder or looking for increased engine capacity, discover Cylinder Works products at Phoenix Motos.
Find the correct Cylinder Works kit by checking your motorcycle's make, model, year, engine capacity and manufacturer part number before ordering. Kit contents and compatibility vary between applications, and big bore conversions may require additional engine modifications.
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CYLINDER ONLY KTM 13-15 SXF250 78mm, WORKS 50004 STD
Regular price £488.01 GBPRegular priceUnit price / perSale price £488.01 GBP -
CYLINDER FULL KIT 54MM YAMAHA YZ 125 05-21, CYLINDER WORKS CW20011-K01 STD BORE
Regular price £615.19 GBPRegular priceUnit price / perSale price £615.19 GBP -
BIG BORE GASKET KIT 18-21 CRF 250 R/RX 82MM, VERTEX GASKET KIT 860VG8100056
Regular price £92.16 GBPRegular priceUnit price / perSale price £92.16 GBP -
GASKET KIT TOP END BB 81.00mm 2004 - 2017 CRF 250 R X CYLINDER WORKS 11001-G01 +3.00mm
Regular price £64.78 GBPRegular priceUnit price / perSale price £64.78 GBP -
CYLINDER ONLY 10-17 CRF250 76.8, WORKS 10007
Regular price £377.73 GBPRegular priceUnit price / perSale price £377.73 GBP -
CYLINDER KIT 02-18 YZ85 52.50mm, WORKS CYLINDER 21007-K01 BIG BORE
Regular price £819.38 GBPRegular priceUnit price / perSale price £819.38 GBP -
GASKET TOP KIT YZF450 10-13 99mm, WORKS CYLINDER 21005-G01 BIG BORE
Regular price £102.62 GBPRegular priceUnit price / perSale price £102.62 GBP -
CYLINDER KIT YZF450 14-17 99mm, WORKS CYLINDER 21005-K02 BIG BORE
Regular price £835.15 GBPRegular priceUnit price / perSale price £835.15 GBP -
CYLINDER KIT 48.5 KX85 06-13, CYLINDER WORKS 30009-K01
Regular price £558.29 GBPRegular priceUnit price / perSale price £558.29 GBP -
CYLINDER ONLY 93mm RZR XP1000, CYLINDER WORKS 60003 STD, 3022594
Regular price £623.11 GBPRegular priceUnit price / perSale price £623.11 GBP -
CYLINDER KIT 09-12 CRF450 99mm, WORKS 478cc 11006-K01
Regular price £700.89 GBPRegular priceUnit price / perSale price £700.89 GBP -
CYLINDER ONLY 09-16 CRF450 96m, WORKS STD 10006
Regular price £402.74 GBPRegular priceUnit price / perSale price £402.74 GBPSold out -
CYLINDER KIT 10-17 CRF250 80mm, WORKS BIG BORE 270cc 11007-K01
Regular price £702.74 GBPRegular priceUnit price / perSale price £702.74 GBP -
CYLINDER KIT 10-13 CRF250 76.8, WORKS 10007-K01
Regular price £553.66 GBPRegular priceUnit price / perSale price £553.66 GBP -
GASKET KIT TOP 06-09 LTR450, 98MM BORE 41002-G01, LT-R450
Regular price £92.43 GBPRegular priceUnit price / perSale price £92.43 GBP -
CYLINDER KIT 06-09 LTR450 98cc, WORKS CYLINDER 41002-K01, LT-R450
Regular price £795.33 GBPRegular priceUnit price / perSale price £795.33 GBP