The dual-piston tensioners, seem to be quite a nice unit.
Used 'em 3 times now.
A 124" build, tuned in Ohio, was commented, that "it was THE quietest 124, they had ever heard".
Note that it had Wood TW-9F-6 cams.
Dennis, if you check out the tensioners Hillside is mentioning here check this thread also:http://www.cvoharley.com/smf/index.php?topic=74040.0
The parts had come up for discussion before when Hillside first suggested them to the site. They may be great parts. But while the agreement was not absolute and universal a general concensus seemed that paying twice as much as even Mother Harley gets for a part doing comparable work wasn't something most of us seemed willing to do. Me included.
Single case anecdotal evidence notwithstanding it's also hard to be convinced these tensioners, in and of themselves, account for "THE quietest" (emphasis in original) engine someone ever heard. Original sales hyperbole from the Zippers website made the following claims: Restores Critical Camshaft Timing Events for Both Cylinders
- Reduced Valve Train Noise by Increasing Chain and Valve Train Stability
- Improved Throttle Response, Engine Acceleration and Engine Smoothness
- Increased Horsepower and Torque Throughout the Entire RPM Range
- Increased Valve Train Component Lifespan in High Performance Applications
Throttle response, increased horsepower and celestial imaginings to calm the mind. All from a pair of chain tensioners.
These parts are for a 2007 and newer motor. But the cam plate you put in does switch to the newer style tensioners. So if you wanted to blow another $160 replacing the tensioners you just installed to gain "The quietest" motor with improved throttle response, horsepower, torque and better celestial calmness "throughout the entire RPM range" this is definitely the place
to piss away $160
to consider spending your money.