The odd increment kits fill the gaps left by the even series, which matters when the shift point a combination actually wants lands between the standard values. This kit spans the 5,000 rpm range on the odd hundreds, covering the window most street and bracket engines shift in.

MSD 87451 5000 Series RPM Module Kit Features:

• Five modules covering 5,100, 5,300, 5,500, 5,700 and 5,900 rpm.
• Even 200 rpm spacing, offset from the even series kits.
• Plugs into ignition controls that accept rpm limiter modules.
• C.A.R.B. E.O. number D-40-29.