Twin Motorcycles is developing a new model big end bearing cage, and replacement big end pin for pressed flywheels ( 1,25 " )
For all Buell and Sportster models with 1,25" crankpin ( bolted or pressed )
Developed for maximal roller use and a tight fitting rol in compairement to the old situtation where the bearing rol can move around to much in the cage.
Because the new design off the cage we manage to house 1 rol more in the cage the new rollers are also as longer as the stock roller, there by giving more bearing surface and so reducing the surface destortion from the crank pin, making it last longer.
As always with a repair like this, the outer rod races should be checked for ware , replaced and made to size
In stead off 17 we use 18 rollers. Also the rollers we use reach 30% more surface. The short roller in the picture is the stock version the longer roller is our new version. The roller cage is made of very nice bronze material.