American Motorcycle Dealer AMD 176 March 2014 | Page 37

S&S flywheel assemblies
S&S Cycle is now able to offer replacement threepiece flywheel assemblies for Harley-Davidson 120R
engines, which have been designed to be stronger
than stock to prevent flywheel shift.
The flywheel assemblies, which have been named
by Cycle Source Magazine as its 2013 Performance
Product of the Year, feature 4-5/8in stroke, stock for
the 120R engine, and feature special 7.575in long
S&S connecting rods. The flywheels are CNC
machined from hardened 4140 steel forgings and
the connecting rods are stronger than stock, with
S&S Cycle stating that tests have shown them to
have over 200 percent greater twist and bend yield
strength.
The crankpin joint features the patent-pending
S&S angled hole crankpin and its special drive plug
to ensures full contact between the flywheel and
crankpin across the length of the joint, and increased
contact pressure.
S&S Cycle’s three-piece flywheel assemblies for

Harley-Davidson 120R engines is available for both
A and B style engines 2007and up, ’99-’06
A style, and ’00-’06 B style.
S&S CYCLE
La Crosse, Wisconsin, USA
Tel: [phone]
[e-mail]
www.sscycle.com