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      02-20-2012, 08:11 PM   #1
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Drives: E92 M3,X5M,F30 335
Join Date: Jan 2010
Location: Chicago

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Rigid Collar - Subframe Collar Kits for E9X M3

Rigid Collar - Subframe Collar Kits for E9X M3

Front set:

Rear set:

YOU TUBE installation and explanation video:

Rigid Collar Company is owned by Spoon Sports in Japan.

The Sub Frame Rigid Collar kit is simple to fit and low cost, Rigid Collars ease into position without affecting the basic geometry of the body. The way the Rigid Collar works is simple. Bolt holes through the chassis panel and sub frame are too big as they were designed for ease of production in the factory. When the car leaves the factory, everything is new and tight and the chassis hardly moves. After a while, the bolts become slightly looser and movement between the panels begins. This is why an older vehicle fitted with new bushings, Shocks and springs, still doesn't behave like a new car.

The Rigid Collar is an aluminum washer (as per photo) with a square outside Taper to increase adhesion on the Thinner flange portion in the middle. This fits between the moving panels and with a properly sized bolt (and Bolt Hole as part of the Rigid Collar) is crushed into place when tightened, joining the two panels and stopping movement forever.

Please contact us for pricing on full or seperate kits and M3 Post member pricing shipped to your location