This is the response from S & S - Nice clear definitive response

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We do not have a special replacement spring for this application but the springs we use in the xwedge now are the same as we are installing into most of our engines. So the springs are the same but different.
Thanks,
Brent Glick, S&S Cycle Inc., 14025 Cty Hwy G, Viola, WI 54664, Ph. (608) 627-0242, Fax (608) 627-1488, bglick@sscycle.com,
www.sscycle.com Monday - Friday 8:00am - 7:00pm (CST)