Competition Suspension 16mm Pro V-Port Aluminum Shock Piston w/Sealing Band (4)

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This is a pack of four Competition Suspension 16mm Pro V-Port Aluminum Shock Pistons. CSI's CNC machined aluminum, blue anodized, Squared/V-Port pistons utilize CSI's Optimum Flow Varying Port design, as well as a sealing band that eliminates fluid blow by. This forces the oil to move through the porting, giving the shock an improved progressive damping curve. The rebound side of the piston ports are tapered to provide quicker rebound shaft velocities, increasing traction and handling.

NOTE:
These pistons fit 16mm bore shock bodies, but the shaft hole size fits CSI shafts only. The shaft hole will have to be drilled larger to accomodate other sizes shafts.

This product was added to our catalog on May 6, 2013.

David Deines
Verified Owner
Tuesday, Jun 21 2016 (2 months ago)
Competition Suspension 16mm Pro V-Port Aluminum Shock Piston w/Sealing Band (4)
Bought these for my Xray XB8E. They fit the shock shafts and aluminum shock tube just fine. Contacted Eric at CSI before I bought them asking what weight oil for my XB8E and he responded (not much data on their website for the aluminum v-port pisiton only their Delrin ones). After I received them, I did not know which way to install them as they came with no instructions. I looked up online on how to install the Delrin ones and wrote to the Eric at CSI. The taper seemed to be opposite from other tapered pistons and the recommended oil weight was much heavier than for a Delrin piston that according to the forums is the same exceprt for 3% leakage around the perimeter. It has been several weeks and still no reply from Eric. I then installed the pistons all around and could hear metal to metal scraping from inside depending on shock travel. I tried with and without oil in the shock but could not get the scrapping to stop. The sealing band (thin o-ring) does not extend out past the aluminum pistion at all locations so the aluminum part of the pistion is scrapping the inside wall of the shock tube. I then e-mailed Eric again at CSI and he still will not answer my e-mails. Do not buy these. Non-existant customer service after purchase. I haven't seen one professional use these, so I'm going back to the stock pistons. $20 down the drain.
Jody McIntyre
Verified Owner
Saturday, Jul 4 2015 (about a year ago)
Competition Suspension 16mm Pro V-Port Aluminum Shock Piston w/Sealing Band (4)
Loko did you have to drill the piston to fit your XB8 shock shaft?. I got lucky and noticed I bought the last set. I'm going to be putting these in my xb8e looking forward to installing them. I'll let you guys know how they work out!
LoKo
Verified Owner
Sunday, Jul 27 2014 (about 2 years ago)
Competition Suspension 16mm Pro V-Port Aluminum Shock Piston w/Sealing Band (4)
Now running this in an XB8 2014 buggy. The seal with the rubber is perfect, better than stock. Improves the shocks. Highly recommend.
James Bray
Tuesday, Mar 25 2014 (about 2 years ago)
Competition Suspension 16mm Pro V-Port Aluminum Shock Piston w/Sealing Band (4)
Mugen runs 15mm shocks. Gotta be careful when ordering. Otherwise they work just as well as the delrin. Pack is good, and rebound is good, butter smooth.
Cristian Cruz
Verified Owner
Friday, Nov 1 2013 (about 2 years ago)
Competition Suspension 16mm Pro V-Port Aluminum Shock Piston w/Sealing Band (4)
I bought this product and does not work in my mugen mbx7. Do not fall into the cylinder of the suspension. They must inform models work well for