cb77xx

The short answer is no. The problem with a stock bird is that it is undersprung and underdampned. Your Penske should have been sprung to your weight which eliminates the need to shim as the stiffer spring and low speed compression damping eleminate blackbird squat. The blackbird needs to be free mid-corner since it cannot be backed in, neutral handling achieves that condition, the stock geometry is good, especially if the front end has been resprung and valved as well. Try Kyle Racing for professional advice, fixed me up with Ohlins front and rear, amazing difference.

Take a look at peterverdonedesigns.com for photos of the valves for comparison. I sent my dampers off to Dan Kyle to have Ohlins valves and shim stacks installed, put them back in with Ohlins springs and Ohlins 16.5 centistoke oil along with an Ohlins rear shock for the makeover. Results were outstanding... amazing what pro spec suspension can do for a smooth platform like the XX.

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