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Latest revision as of 23:16, 6 June 2017
- This article is a wikified version of this post from the forums.
This spring was $4.99 at my local hardware store. Made of stainless steel. Great quality. The package says # C-806 from the Centruy spring company, and the measurements are 38.10 × 82.66 × 3.769mm.
Comparison to stock derbi 3 weight spring:
Installed in derbi rear pulley cam:
Results: In a Metra 80 piston port, it has great low end -- pretty much spot-on with what you would tune a TJT or 6 weight to. I also machine my 3 weight variator cheeks down to allow it to variate further. Didn't loose any top speed from this.