The lights are right at 3” diameter with a super slim profile

4000 Lumens (SFS bulbs)

The Dyna S is completely housed behind the ignition cover and uses a magnetic rotor with the original advance unit

Maintains Stock Appearance: Preserves the classic stock styling of your Sportster

Duplicate of OEM# 40392-91 compensating sprocket nut used on 1991-2006 Big Twins

Battery Box 4L-BS w/ Breaker Mount for OEM Harley-Davidson Horseshoe Tanks Subcategory_Air Filter Elements The lights are right atThis is intended as an adapter for fitting a 4L BS battery to most standard battery compartments, including OEM Harley Davidson Horseshoe oil tanks, and it has a dual Bussmann Automotive Circuit Breaker mount integrated into the top strap. This size battery is mostly suited for kick start only bikes. 3D printed from Carbon Fiber reinforced Nylon. Made in the USA. Most any 4L BS battery should work, just check that it is 3 3 8 Tall, 4 1 2 Wide, and 2 3