Accel, single fire/dual fire ignition module - 70-99 B.T. (excl. Twin Cam, excl. injection); 71-03 XL (NU) 2738 Bolt-in OEM 74" Knucklehead replacement

Bolt-in OEM 74" Knucklehead replacement grind

Used to mount aftermarket air cleaner assemblies with a flat backing plate

swingarm frame

Gloss black finish with amber lens

Accel, single fire/dual fire ignition module - 70-99 B.T. (excl. Twin Cam, excl. injection); 71-03 XL (NU) 2738 Bolt-in OEM 74" Knucklehead replacementWorks with single and dual fire ignition set ups. Features 14 advance curves from stock to extreme and an adjustable rev. limiter. VOES imput option and tachometer output. Front cylinder static timing with a L. E. D. light for easy set up. Note: The difference between single dual fire explained: Dual fire This is the way the earlier, pre Twin Cam, engines work. A single coil is used and both spark plugs fire simultaneously. This is the simplest