Yamaha YZ85 YZ80 Phathead cylinder head kit 1993-2018 Color:Gold S21 - 20

S21 -  20

KTM300Xc-W 2025+ Husqvarna TE 300 TBI Phathead cylinder head kit

5cc Stock compression

2cc Stock compression

We have teamed up with HP Race Development to fine tune the GET ecu platform

Yamaha YZ85 YZ80 Phathead cylinder head kit 1993-2018 Color:Gold S21 - 20Yamaha YZ85 Phathead cylinder head kit 1993 2018 YZ80 Chamber selection: Y01 6. 4cc StockY02 6. 0cc (95+ octane)Y03 5. 6cc (100+ octane)Y04 5. 2cc (105+ octane) 52. 5mm big bore chamber 100+ octane for use with big bore piston Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made