taco eater :
tdawg from San Francisco, CA United States
I've tried every kit there is for an M1 and I have two seized gilas to prove it. Looks like this one has gotten pricy but dare I say, worth it. Buy nice or buy twice!
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CASE MATCH
January 16, 2012
taco eater :
Ascoute from the Zeros from toledo, OH United States
im hitting 51 with this kit a hack and weld boss pipe and the 14.12, as Chad mentioned it works well uncase matched (personally I run kits uncase matched for the break in, then case match once the kit is good and broken in) but once you match this thing up it rips hard, 50mph on 57cc's? I'll take it
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Universal kit
May 25, 2011
taco eater :
Chad Burke from Kalamazoo, MI United States
Hey everyone, this kit will fit both pre and post 1985 engines. It performs well on case matched as well as uncase matched engines. Dykes ring, great compression. For a little more power, open up the exhaust port some with a dremel.
Best m1 Kit 
Universal kit