S&S, flywheel assembly with 4-1/2" stroke for 99-06

106" engine with long stroke. Balanced to 1108 grams total piston weight.
Note: Engines with strokes over 4" may require S&S piston lubrication jets and clearance notches between the piston and jet in the piston skirt to avoid contact.
Note: S&S crankshafts allow the use of replaceable bearing shells at the lower end of the connecting rods. The first generation of S&S crankshafts, in use until 2012, had a diameter of 1.500". The second generation of crankshafts, in use since 2013, has the larger OEM crankshaft diameter of 1.671". S&S and OEM crankshafts are now identical in diameter, so S&S parts can be used to rebuild stock H-D flywheels, which was previously not possible as H-D rebuild parts were not and are not available.
Note: The following applies to 03-17 models. S&S has designed these flywheels to work with a Timken style pinion shaft bearing; they fit 99-02 stock models and all S&S crankcases without modifications. Stock 03-17 H-D Twin Cam engines use the same pinion shaft roller bearing as used on the sprocket shaft, a cheaper but weaker solution. It is possible to use the weak stock 03-17 bearing kit (OEM H-D 24004-03B) with S&S flywheels in 03-17 stock crankcases. However, S&S believes this roller bearing will not withstand the side loads produced in a high performance engine. S&S will not honour any warranty claim in an application where the 03-17 OEM 24004-03B/24605-07 sprocket shaft roller bearing style assembly is used. To upgrade to the pre-2003 pinion shaft bearing style, the MCS 978517 JIMS conversion tool kit is available. This kit includes one tool, one Timken bearing and one steel crankcase bearing insert for one engine. Bearing inserts are available separately as 978519, and bearings separately as 508960.
Note: In all applications, the technician must be able to judge the suitability of the components in combination with the other engine components before installation. It is important that a qualified mechanic carries out the installation and any necessary adjustments.


Specifications


Brand
S&S


Application
99-06 Twin Cam (Excl. 2006 Dyna) (NU)


OEM
24004-03B, 24605-07


Sales unit
Set


Material
Steel


Packaging weight
17.836 kg


HS Code
84831021


Motorcycle family
DYNA, SOFTAIL, TOURING


Original name
S&S, 99-06 4-1/2" stroke flywheel assembly