Cylinder Kits for 2 strokle and 4 stroke engines

2 Stroke kits

Race cylinder kits include a nickel carbide coated cylinder ported to factory works specs. special hard snodized exhaust valves, complete piston kit, and a top end gasket set. Factory cylinder kits include all parts in the race kits plus an aluminum cylinder head removable brass dome allowing for higher compression and anti detonating features.

4 Stroke kits

Available in standard bore and big bore sizes, 4 stroke kits include a nikel cabine coated cylinder designed with wider water jackets, complete piston kit and top end gasket.

Big Bore Kits

	Athena cylinder kit Honda CRF450R/X 96mm standard bore 02-06 Code: 68-4700 Price: $626.00 Quantity in Basket: none
11.5:1 compression cylinder kit 450cc
	Athena cylinder kit Honda CRF450R 100mm big bore 02-06 Code: 68-4710 Price: $662.99 Quantity in Basket: none
11.6:1 compression cylinder kit 490cc
	Athena cylinder kit Honda CRF250R/X 78mm std 04-06 Code: 68-4721 Price: $604.42 Quantity in Basket: none
13:1 compression cylinder kit 250cc
	Athena cylinder kit Honda CRF250R/X 82mm big bore 04-06 Code: 68-4730 Price: $705.99 Quantity in Basket: none
13:1 compression cylinder kit 280cc
	Athena cylinder kit Kawasaki KX125 54mm 03-06 Code: 68-4800 Price: $550.99 Quantity in Basket: none
14.8:1 compression cylinder kit 125cc
	"Athena cylinder kit Kawasaki KX250F,Suzuki RMZ250 77mm standard bore 04-06" Code: 68-4820 Price: $575.99 Quantity in Basket: none
12.6:1 compression cylinder kit 250cc
	"Athena cylinder kit Kawasaki KX250F,Suzuki RMZ250 83mm big bore 04-06" Code: 68-4840 Price: $648.99 Quantity in Basket: none
12.8:1 compression cylinder kit 290cc
	Athena cylinder kit Yamaha YZ125 54mm 96-04 Code: 68-4860 Price: $531.99 Quantity in Basket: none
14.8:1 compression factory cylinder kit 125cc
	Athena cylinder kit Yamaha YZ125 54mm 01-04 Code: 68-4870 Price: $477.99 Quantity in Basket: none
14.8:1 compression factory cylinder kit 125cc
	Athena cylinder kit Yamaha YZ/WR250F 77mm standard bore 01-06 Code: 68-4880 Price: $575.92 Quantity in Basket: none
12.5:1 compression cylinder kit 290cc
	Athena cylinder kit Yamaha YZ/WR250F 83mm big bore 01-06 Code: 68-4890 Price: $648.99 Quantity in Basket: none
12.5:1 compression cylinder kit 290cc
	Athena cylinder kit Yamaha YZ450F 95mm standard bore 03-05 Code: 68-4900 Price: $626.99 Quantity in Basket: none
12.3:1 compression cylinder kit 450cc
	Athena cylinder kit Yamaha YZ450F 98mm big bore 03-05 Code: 68-4910 Price: $676.99 Quantity in Basket: none
12.4:1 compression
	Athena cylinder kit Yamaha YZ125 58mm big bore 05-06 Code: 68-4930 Price: $681.61 Quantity in Basket: none
144cc
	Athena cylinder kit Yamaha YZ450F 95mm 06 Code: 68-4940 Price: $626.00 Quantity in Basket: none
450cc
	Athena cylinder kit Yamaha YZ450F 98mm 06 Code: 68-4990 Price: $676.99 Quantity in Basket: none
450cc
	Athena cylinder kit Yamaha YZ125 54mm standard bore 05-06 Code: 68-4920 Price: $611.99 Quantity in Basket: none
14.8:1 compression cylinder kit 125cc
	Athena big bore cylinder kit Kawasaki KX450F 100mm big bore 05-08 Code: 68-4401 Price: $669.99 Quantity in Basket: none
	Athena cylinder kit Honda CRF450X 96mm big bore 05-07 Code: 68-4750 Price: $628.99 Quantity in Basket: none
	Athena big bore cylinder kit Honda CRF450X 100mm big bore 05-07 Code: 68-4755 Price: $664.98 Quantity in Basket: none