MSD - RPM Module Kits include five modules in 200 rpm increments. Valve Cover - Signature Series

Valve Cover - Signature Series - Short - Baffled - Breather Hole - Grommets - Edelbrock Logo - Steel - Chrome - Mopar B / RB-Series - Pair

Intake Manifold - RPM Air Gap - Square Bore - Dual Quad - Aluminum - Natural - Small Block Chevy - Each

5 in OD - 11 in Length - 250 lb/in Spring Rate - Single Pigtail - Rear - Steel - Silver Powder - Each

Intake Manifold - Performer RPM Q-Jet - Spread / Square Bore - Dual Plane - Oval Port - Aluminum - Natural - Big Block Chevy - Each

75 in Diameter - 1-1/8 in x 10 Spline - Sprung Hub - Organic - Jeep Wrangler JK 2012-17 - Kit

MSD - RPM Module Kits include five modules in 200 rpm increments. Valve Cover - Signature SeriesEach kit is within a 1,000 rpm range. For example, the PN 8745 is supplied with: 5,000, 5,200, 5,400, 5,600, 5,800 modules.