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The Ideal muffler engagement to header pipe is 25mm
* Perfect for stock replacement & high performance applications
Combine this with an oversized fit
ready to install with no wire-cutting or splicing required
Crankcase Assembly with 3-1/2in. Bore - Black. Fits Big Twin 1984-1991. SAD-818-29-002 The Ideal muffler engagement toFeatures & Benefits: * Wrinkle Black. * Perfect for stock replacement & high performance applications * These crankcases offer some unique features. * Besides being machined for a crank position sensor, they are also compatible with stock flywheel assemblies, primary covers, gearcovers and are clearanced for 38 amp alternator stators. * Relocated cam chest oil pick up increases gear case scavenging & virtually eliminates oil carry over at sustained