Hydrospace HSR S4 Pro Pistons and Rings For Sale

riverratdad · 08-13-2009, 01:59 PM

You are looking at New Pro Propriety Aftermarket Pistons for your Hydrospace HSR S4. These are available in stock or big bore sizes. Reduce oil wash out on your S4 Nikasil cylinders. These pistons are legal for IJSBA Stock, Limited, Open or GP Classes. These pistons with rings are sold in a set of two. These are your next step in raising your horse power and S4 reliability. These are the pistons used by the Pros. Buy with confidence. Check our Ebay store for other Hydrospace items.

ludojet · 08-15-2009, 05:51 AM

What the exact piston size in mm ?
Ludo

riverratdad · 08-15-2009, 11:00 PM

Quote:

Originally Posted by ludojet

What the exact piston size in mm ?
Ludo

Hello Ludo....84.9mm we are working on others that we should have soon......We will see you soon.....when are you coming to USA....we have our US Championships in 3 weeks....get the boys from Moroco to come out sooner....Hope you are all well.....Lee

riverratdad · 09-09-2009, 07:57 AM

In Nashville in tech, I was told that these are not IJSBA legal for stock or limited because they have a 2 mm difference in OEM height? At this point I'm just relaying what I was told.....Dad

97 · 09-09-2009, 09:52 AM

hey Lee, please tell me the difference-is the skirt 2mm lower from the center of the wrist pin and who make these piston-china, taiwan etc..thank

riverratdad · 09-09-2009, 10:09 AM

Quote:

Originally Posted by 97

hey Lee, please tell me the difference-is the skirt 2mm lower from the center of the wrist pin and who make these piston-china, taiwan etc..thank

these are JD Pistons and Rings (can only be purchased through Macc Racing and their dealers).....we will measure these and get back to you.....I was only relaying what I was told by tech and Nashville (no one was DQ's because of this).....we are also going to get these to the IJSBA for a ruling....Lee

millertime · 09-09-2009, 05:08 PM

wonder if that is whats in Mrs maccs HS???? sorry I couldn't resist