Athena 12-13 KTM EXC-F 250 Big Bore Complete Cylinder Kit

Athena 19-22 Suzuki RM-Z 250 Big Bore Complete Cylinder Kit

Athena 09-15 Kawasaki KX 450 Complete Big Bore Cylinder Kit

Athena 03-06 Kawasaki KLX 400 94mm 435cc Big Bore Cylinder Kit

Athena 15-18 Yamaha WR 250 F Big Bore Complete Cylinder Kit

Athena 2016 Husqvarna FE 250 KTM Engine Big Bore Complete Cylinder Kit

Athena 20-21 Yamaha YZ 125 X Stock Bore Complete Cylinder Kit

Athena 97-04 Yamaha YZ 125 Stock Bore Complete Cylinder Kit

Athena 06-11 Suzuki LT-R 450 QuadRacer 100mm 490cc Big Bore Cylinder Kit

Athena 11-12 Kawasaki KX 250 F Big Bore Complete Cylinder Kit

Athena 09-10 Kawasaki KX 250 F Big Bore Complete Cylinder Kit

Athena Derbi GPR 125 65mm Bore 170cc Big Bore Cylinder Kit

Athena 19-24 Yamaha YZ 85 Standard Bore Cylinder Kit

Athena 2010 KTM EXC-F 250 Champion Edition Big Bore Complete Cylinder Kit

Athena 04-04 Aprilia MX 50 50mm Bore 80cc Big Bore Cylinder Kit

Athena 06-14 Yamaha YFM 700 Raptor 105.5mm Big Bore Cylinder Kit

Athena 02-18 Yamaha YZ 85 Complete Cylinder Big Bore

Athena 03-24 Yamaha YZ250 LC 72mm Cylinder

Athena 01-04 Yamaha YZ 125 Stock Bore Complete Cylinder Kit

Athena 03-07 Kawasaki KX 125 Stock Bore Complete Cylinder Kit

Athena 03-06 Kymco KXR 250 72.7mm 250cc Standard Bore Cylinder Kit

Athena 22-24 Yamaha YZ 125cc / 23-24 Yamaha YZ X 125cc Standard Bore Cylinder Kit

Athena 05-09 Derbi GPR 125cc Standard Bore Cylinder Kit (w/56mm 125cc Modular Head)