This battery is best used for applications where extreme weight loss and ultra compact size are desired

without sacrificing everyday usability

and the Harley OEM numbers for each

(1) 1/4"-20 x 1/2" socket head bolt

check ball spring

Triumph Unit 650 Primary Cover Bonneville Tiger Trophy OEM #57-1727 Subcategory_Axle Adjusters This battery is best usedThese new, reproduction primary covers are proper fitment for 1963 1967 Triumph unit 650 c. c. T120 Bonneville, TR6 Tiger, Trophy, 6T Thunderbird etc. They will also fit 1968 and later 650's though they do not have the removeable primary inspection cover that is found on the later primary covers. The quality and fit of these primary covers is beautiful, and they come polished and with an adjuster plug, ready to go! Replacement for OEM # 57 1727 T1727