Description
Boost compression with HSI High Comp Head Gasket – fiber gasket for Yamaha 701cc (61X/62T/64U). Drops 2cc from stock dome for safe pump gas power gain. Easiest way to wake up your 701.
Simple Power
- Compression: +2cc reduction
- Fuel: 91 octane safe
- Fit: 61X, 62T, 64U heads
- Warning: Do not use if head/cylinder decked
Applications
- SuperJet 701: Stock or mild build
- WaveBlaster/FX1: 701cc
Reliable power, no machining. HSI quality.
Part Number: HSI-88-Y-CH61XHIGH
