KOSO SOHC Big Valve Cylinder Head for Cygnus X / BW'S

【KN Planning KS-SOHC-ACS KOSO SOHC Big Valve Head for Cygnus X/BW'S】
・KOSO SOHC Big Valve Head for Cygnus X/BW'S

【Features】

・Introducing KOSO's SOHC Big Valve Head Kit!
・Perfectly fits the popular KOSO 58.5φ big bore kit!
・Recommended for those who find the stock head insufficient.
・Target piston sizes are 58.5Φ and 59Φ.
・Valve sizes are IN 21Φ, EX 19Φ.
・The stock air-cooled fan cover can be used.
・The stock camshaft can be installed.
・For even higher power, use in combination with a Pro camshaft.
【Compatibility】

・Cygnus X 1st Generation Domestic Specification【5UA】
・Taiwan Specification【5TY】

・Cygnus X 2nd Generation Domestic Specification【28S】
・Taiwan Specification【4C6・1CJ】

・Cygnus X 3rd Generation Domestic Specification【1YP】
・Taiwan Specification【1MS】

・Cygnus X 4th Generation Domestic Specification【BF9】
・Taiwan Specification【2UB】

・Cygnus X 5th Generation Domestic Specification【B8S】
・Taiwan Specification【B2J】

・BW'S125 1st Generation Taiwan Specification【5S9】

・BW'S X 1st Generation Taiwan Specification【46P】

・BW'S 125 2nd Generation Domestic Specification【BG1】

・BW'S R 2nd Generation Taiwan Specification【2JS】

【Set Contents/Accessories】

・Cylinder head x 1
・IN side valves x 2 (pre-installed)
・EX side valves x 2 (pre-installed)
・*Stem seals pre-installed
・Japanese instruction manual x 1
【Manufacturer's Notes】

※The head temperature sensor hole is M10 x 1.25. If not used, the hole must be plugged with a bolt or similar.
※Always check squish clearance and valve recess size, etc., during installation.
※This is not a full kit, so we cannot accept any claims after installation.
※There is no designated cylinder kit setting, so please use it with your preferred cylinder kit.
※This product is a high-end tuning part. Please ensure that assembly is performed by an experienced mechanic.
※Camshaft and rocker arms are not included.
※If the chain guide interferes due to individual differences, please machine it accordingly.
※Valve springs, retainers, cotters, etc., are not included.
※The image is for illustration purposes only, and the design and specifications of the products shown are subject to change without notice. Please be aware of this.