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 Show Less