Product Details
Ring Set by Sputhe®. For Two Pistons. Compression rings are low-tension vacuum melt "Meehanite". The face of the top ring is filled with molybdenum di-sulfide. The improved bond strength of this plasma-applied moly coating provides resistance to moly flaking. The porosity of the coating results in improved top ring lubrication. The oil ring assembly is an important element of the low-tension ring set. The use of oil ring assemblies with low tangential tension would normally result in oil passing the rings and entering the combustion chamber. However the rotary valve breather system on the Harley-Davidson (which creates a vacuum in the crankcase, assists the oil ring in controlling oil) has allowed the use of the oil ring tensions below 15 lbs.
Notes
- This is a Special Order product and, therefore, Non-Cancellable and Non-Returnable.
Fitment notes
- Will Fit Sputhe Cylinder Models
Features
- Precise engineering ensures the latest in quality
- Expertly manufactured from highly reliable materials
- Rigorous quality control and great functionality
Installation
Some heads need small crescents of weld to the head boltholes to provide a sealing surface against the "O-ring" head gasket.
On late type studs, the flange below the threads must be removed. Early engines with female studs and head bolts must be converted to the 1986 and up male studs and tube nuts.
- Cylinder spigots must be bored to 4.010 dia.
- With the 95" kit, it is not necessary to rebalance the crank because the piston assemblies weigh 100 grams less than stock.
- The 104" kit uses 4 5/8" stroke flywheels. Sputhe recommend S&S part number 2060.
- 1991 and newer engines must have the stock crankcase replaced with Sputhe crankcase part #7009 or other after market crankcase.
If a product you buy bears the name Sputhe®, you can be assured that Sputhe made it and that Sputhe will back it with knowledgeable technical assistance, service and spare parts. A production machine shop that employs the latest CAD-CAM technology and is equipped with the most advanced American made CNC machining centers and inspection equipment. All of product development and prototype testing is done in-house. Sputhe is able to respond to new developments more quickly and with better products than competitors. Since Sputhe doesn’t have to rely upon outside vendors, Sputhe is able to exercise much greater control over the quality and production scheduling of products than competitors can. Sputhe company name has long been known for providing the very best in high performance equipment.