S&S 106-3240 Super Stock 89cc Cylinder Head Kit Twin Cam 06-17

• High port flow gives great performance now, and more later when additional upgrades are done
• Heads are fully assembled with springs and valves, and are available in silver or black powder-coat finish to match OEM components
• Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see Compression Ratios chart for specifications
• 89cc heads work best for motors over 103 in. or with high-compression pop-up pistons
• 89cc have 2.000 intake and 1.605 exhaust and .640 springs
• Accept S&S rocker boxes only
• Heads are machined for compression releases DK#1400150(Sold Separately)
• Do not include rocker arm components, intake manifold, gaskets or headbolts (requires eight long OEM length head bolts)
• Accepts OEM intake manifolds
• Sold in pairs
• Made in the U.S.A.

NOTE: OEM pistons will require machining for valve clearance

NOTE: Not for models with OEM compression releases

This item ships 3-4 business days after order is processed

(2) Black cylinder heads with springs and valves installed

(2) Hex head compression release plugs

(2) 1/2" Crush washers

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