Transmission Gears & Shafts for 4-speed Big Twin size Internal shapes have been tweaked

Internal shapes have been tweaked to allow increased flow and velocity

your stock black transmission covers to chrome or replace a set of aged OEM chrome covers to this stylish louvered design

Its is left 24 hours then another coat can be applied and up to 5 times allowing up to 5 coats and 3mm or 1/8 of an inch thickness this will also seal small pinholes too

These are not ordinary fender tips

While the regular O-ring chain has high durability

Transmission Gears & Shafts for 4-speed Big Twin size Internal shapes have been tweakedMainshaft BT65 69 #35039 65T Stock replacement parts for the 4 speed and 3 and reverse transmission as used in 1936 thru 1986 Big Twin models. As always, we show OEM part numbers for reference only. The actual OEM part might have been slightly different or could have included a bushing, washer or retaining ring where the replacement is just the main part. Replacements however can be used for the years as indicated but please note that after all these