Lucas Type Auto Advance Unit Springs (1 PAIR) - 54415642 Wipac New SRM BSA Twins Finned

New SRM BSA Twins Finned Magnetic Sump Plate Complete Mounting Kit

Please review the measurements above to ensure the best fitment

New BSA Unit Twins Late 1969 A50 & A65 Gear Change Cam Plate

* Brand New English Made BSA Unit Twins Chrome Front Exhaust Cross Strap Stay Bracket

etc) from 1971 & On

Lucas Type Auto Advance Unit Springs (1 PAIR) - 54415642 Wipac New SRM BSA Twins FinnedNew Lucas Type Auto Advance Spring Set. It is crucial that your auto advance springs are in good working order. In detail, if your springs become worn and loose tension, it will cause erratic idle especially when the RPM's are decreasing. This new auto advance spring set has the right tension which will allow your motorcycle to rev smoothly throughout the RPM range and smoothly at idle. Works with most Triumph, BSA, & Norton singles, twins and triples