I found 2 brand new sets of SLP # 40-39 ,. 67 1/2 gram lightning weights in the back of our parts department. Retail in the slp book is $89.95. Will sell for $ 60 set of 3. SLP offers custom-built shift weights for Polaris and comet clutches. These TCP/WMS designed weights are tuneable by drilling out the available four 1/16 pre drilled holes for your desired shift RPM. Weights are fully machined from alloy steel, bushed and hardened for performance and duraability. The weight has an aggressive shift probile and heavy tail for great performaance. Direct bolt in use in any 1988 and newer polaris clutch with out reshimming. Typically SLP says to use 3 grams heavier weight than your standard weight, Thes things work and work good. PM or email dan @ jetjohnso@aol.com if enterested.