The technical edge:

8 mm spark plug wires is constructed with silicone throughout the jacket

The Diamond Sully's solo seat fits 1982 - 2003 Sportsters

They hug it close but with adequate clearance and follow the profile of the tire exactly

giving your body some suspension

Solo Seat Weld-On Threaded Spring Mounts Finish_Raw The technical edge:From Lowbrow Customs: Mount your solo seat easily with these weld on solo seat spring mounts. Made of 1018 cold rolled steel for easy welding, they are 1" diameter with a threaded 3 8" 16 shaft for the spring to sit over. They are coped at 1" to fit standard size frame tubing, but can easily be enlarged to fit larger 1 1 4" tube if necessary. Included are a heavy duty chrome steel washer and a chrome nylock nut for each mount to secure your seat