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Penske Shock Set Up

Allan

Allan

Tuned and Synch'ed
Joined
Oct 28, 2008
Messages
53
Location
Long Beach, California
I now have been about a 1,000 miles on my Penske Model 8983 (Compression + Rebound). It is probably the single biggest improvement made to my '08 1200 Sport. Living in Colorado 90% of my riding is in the mountains and canyons - the sides of the tires wear thin a lot sooner then the center. The roads here aren't the best; frost-heaves, crack sealer, loose stones and gravel - a well set-up suspension is paramount to peace of mind. I no longer think about how the motorbike is going to react when it is on it's side and I'm tracking through some rough pavement. I did very little adjusting from how it was delivered. It was set up well for my weight and riding habits. The one thing that is an absolute must - the ride height needs to be raised anywhere from 8 - 12mm. Prior to this adjustment the bike wanted to run wide exiting corners and it was a bit of work initiating the corner. I started with 1/4 inch (from the yoke to where the threaded adjustment enters the shock body) and kept raising the rear until I was little bit over 1/2 inch. I ended up with 10mm. Forget the Hyper-Pro shock spring replacement; I had this and it doesn't compare.
 
Thanks for the feedback Allan as this is an upgrade I'm considering. How easy is it to adjust preload when you want to ride two up? Have you made any changes to your front end set up as a result of the rear shock installation? TIA
 
John, hopefully Allan will reply, if not, email him direct. To answer the first question, the single lock ring has a small nylon-tipped allen set screw that holds it in place. Loosen and turn the ring with the angled tool shown below. It is very easy. Order details here; https://www.guzzitech.com/store/PenskeShocks.html

Penske8983.jpg
 
JohninVT said:
Thanks for the feedback Allan as this is an upgrade I'm considering. How easy is it to adjust preload when you want to ride two up? Have you made any changes to your front end set up as a result of the rear shock installation? TIA
Click to expand...

John - As Todd depicts in the photo, there is a tool for the 'preload' adjustment. This can be done quite easily by reaching in above the rear tire and rotating the ring at the top of the shock. It's a slow process as you move the collar a quarter turn at a time. I put a little dab of red paint on the collar so I don't lose track of where I am. I know I ended up moving my preload less then a turn from how it was shipped. I ended up with 28.7mm of sag. I am using the HyperPro fork kit. This is a (fairly) inexpensive route to go and my feeling is that the fork needs this 'kit.' Oh yeah, I used black zip-ties to hold the reservoir in place - looks better then the steel bands.
 
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