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S&S Cycle CNC-Ported B2 Cylinder Heads

High performance just got a lot easier and more affordable with S&S Cycle's CNC-ported B2 cylinder heads. In the past, S&S's B2 Special Application heads, that were used on the now legendary Tribute 145 engines, were often hailed as the best choice for very large displacement V-Twin engines. Now S&S Cycle offers CNC-ported B2 cylinder heads that are even better—providing added convenience, economy, and performance at the same time. Convenient, because they now fit 2008-later bagger front motor mounts and the new two bolt exhaust mounting flange is a lot easier to work with. Economical, because riders can use stock exhaust pipes, or existing 2 in. header systems. The increase in performance comes from increased flow of CNC-ported intake and exhaust ports. Heads features stock bolt pattern and require special pistons, intake manifold flanges, and pushrod length for installation. Features and benefits: * 106cc combustion chambers * Oval intake ports bolt up to S&S throttle Hog 70mm throttle bodies (2008-up touring applications) * Stock-style breather system—compatible with stock and aftermarket air cleaners * Large 2.200 in. intake and 1.800 in. exhaust valves * Machined for stock sensors—EFI friendly * .660 in. lift S&S valve springs with titanium top collars * Head kits include valves and valve springs * Requires special pistons, pushrods, manifold intake, intake flanges and seals, and an exhaust adaptor kit (sold separately) * Kits do not include gaskets, hardware, or intake and exhaust flanges (these parts must be purchased separately) Fitment: * S&S only stocks the late model 4 1/8 in. bore versions as off-the-shelf items, but heads for other applications and individual front of rear replacement heads available by special order only Possible options by Special Order: (final price varies depending on selected special option requests by customer) * Cylinder head sets without valves or springs individual front, or rear heads * CNC-ported intake and exhaust ports—more air, more power! * Two-bolt exhaust flanges—can accommodate stock exhaust headers, existing 2 in. headers, or build your own 2 in. exhaust system * Machined for 2008—later bagger front motor mount * 4 1/8 in. to 4 3/8 in. bore sizes * Stock 1999-up, S&S, or other cylinder stud patterns—other patterns subject to approval * Machined with or without S&S electric compression release * Choose from a variety of pushrod geometry machining styles * Choose from a variety of different chamber sizes * Individual front of rear heads available by special order * Available in wrinkle black, gloss black, silver, or natural

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