25 mm thick

Both are CNC machined forged aluminum for strength and precision

179" exhaust TDC lift in combination with stock pistons

Fits: > Cylinder to case: 84-99 B

Note: Wide & Narrow band EBC rotors are compatible with stock brake pad size

Dyna 12Volt 5 Ohm Dual Fire Coil Motor delar TC 99-upp 25 mm thickBlack. Designed for use in custom applications where 2 of these coils are used for bikes with dual plugged heads (4 spark plugs in total) that run a single fire points style ignition system. Note: It is recommended to use ignition modules & coils of the same manufacturer. Intermixing different brands may cause premature failure. Note: Difference between Single & Dual Fire: Dual Fire This is the way the earlier, pre Twin Cam, engines work. A single