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 STD 66.40mm YAMAHA 2003 - 2025 YZ 2T 250 5UP-11311-21 CYLINDER WORKS 20009
Regular price £512.23 GBPRegular priceUnit price / perSale price £512.23 GBP -
CYLINDER KIT 100 02-08 CRF450 WORKS, HONDA 02-08 CRF450, CYLINDER WORKS 11002-K01
Regular price £651.36 GBPRegular priceUnit price / perSale price £651.36 GBPSold out -
CYLINDER BIGBORE KIT YZ250 99-15, 72mm, 293cc, MX-09153K
Regular price £680.02 GBPRegular priceUnit price / perSale price £680.02 GBPSold out -
CYLINDER KIT 15-18 KVF700 91mm, WORKS BIG BORE 31007-K02, 2015 - 2017 Kawasaki BRUTE FORCE 750
Regular price £1,347.19 GBPRegular priceUnit price / perSale price £1,347.19 GBPSold out -
CYLINDER KIT 05-14 KVF700 91mm 05-14 BIG BORE KAWASAKI BRUTE FORCE 750 31007-K01
Regular price £1,551.46 GBPRegular priceUnit price / perSale price £1,551.46 GBPSold out -
CYLINDER KIT BB 81.00mm HONDA 2004 - 2017 CRF 250 R X CYLINDER WORKS 11001-K01 +3.00mm
Regular price £697.18 GBPRegular priceUnit price / perSale price £697.18 GBP -
CYLINDER ONLY YZF250 14-18, WORKS CYLINDER 20010 77mm, WRF250 2015-2018
Regular price £402.74 GBPRegular priceUnit price / perSale price £402.74 GBPSold out -
CYLINDER FULL KIT 72MM YAMAHA YZ 2T 250 99-23, CYLINDER WORKS 21009-K01 295CC BIG BORE, (Piston included)
Regular price £885.15 GBPRegular priceUnit price / perSale price £885.15 GBPSold out -
CYLINDER FULL KIT CRF 250 R 18-19, 79MM, CYLINDER WORKS KIT CW10011K01HC, 14.6:1 HIGH COMPRESSION
Regular price £614.98 GBPRegular priceUnit price / perSale price £614.98 GBP -
CYLINDER KIT VERTEX 102.0 KTM EXC400/450 08-12, VERTEX 420025 HUSABERG FE450E 09-11
Regular price £1,107.62 GBPRegular priceUnit price / perSale price £1,107.62 GBP -
CYLINDER ONLY 06-09 YZF450 95mm, WORKS Cylinder 20003, 2007 - 2015 Yamaha WR450F
Regular price £380.50 GBPRegular priceUnit price / perSale price £380.50 GBP -
CYLINDER ONLY 10-18 RMZ250 77, WORKS 40004 STD
Regular price £414.84 GBPRegular priceUnit price / perSale price £414.84 GBP -
CYLINDER ONLY 09-18 SX 65 KTM, WORKS CYLINDER 50005 STD
Regular price £585.14 GBPRegular priceUnit price / perSale price £585.14 GBP -
CYLINDER ONLY 11-12 SXF350 88, WORKS CYLINDER 50001 STD KTM, SX-F350 / SX350F
Regular price £488.01 GBPRegular priceUnit price / perSale price £488.01 GBP -
CYLINDER ONLY 13-15 SXF350 88, WORKS CYLINDER 50003 STD KTM, SX-F350 / SX350F
Regular price £474.96 GBPRegular priceUnit price / perSale price £474.96 GBP -
CYLINDER ONLY 09-15 KX450F 96mm, WORKS CYLINDER 30011 STANDARD BORE, KX450F KAWASAKI
Regular price £411.87 GBPRegular priceUnit price / perSale price £411.87 GBP