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Low Compression Head Mod // 2007-2017 ZR/F/XF/M 800/8000
SKU: ACFHM-800-XXX
$99.95
We can machine your stock head's combustion chamber to lower the compression ratio to 12:1 or 11:1..
Compression Ratio:
Core Options:
O-Ring, Head- Outer // 800 F/M/XF/ZR / 800/900 Twin / 800/900/1000 Triple
SKU: 3004-081
$13.95
O-Ring, Head- Outer // 800 F/M/XF/ZR / 800/900 Twin / 800/900/1000 Triple
O-Ring, Head- Inner // 800 F/M/XF/ZR / 800/900 Twin
SKU: 3005-854
$18.95
O-Ring, Head- Inner // 800 F/M/XF/ZR / 800/900 Twin
O-Ring, Spark Plug // 800 & 925 Big Bore Speedwerx Stealth Head Mod
SKU: 1-232 9727
$3.95
O-Ring, Spark Plug // 800 & 925 Big Bore Speedwerx Stealth Head Mod
DOME, 800 - 14:1 Compression, Premium Pump Gas 5,000-9,999ft
SKU: ACF8BH14D-1
$180.00
Dome inserts for our stock head mod kits...
DOME, 800 - 15:1 Compression, Premium Pump Gas 10,000ft +
SKU: ACF8BH15D-1
$180.00
Dome inserts for our stock head mod kits...
DOME, 800 - 13:1 Compression (2010-up HO Stock Compression), Premium Pump Gas 0-4,999ft
SKU: ACF8BH13D-1
$180.00
Dome inserts for our stock head mod kits...
Stealth Head Mod // 2007-2017 ZR/F/XF/M 800/8000
SKU: ACFHM-800
$177.00
This is for the Stealth Head Mod only- you need to order two domes and two o-rings as well!
Core Options:
Billet Domes (Pair):
O-Rings (Pair):