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By: Team Source

K&K Team Rider Neal Moser's BansheeHow many of you Banshee owners have wondered what it would be like to have Out-of-Frame Drag pipe power built into your In-frame pipes? Due to the constraints of building a pipe that fits up and into the chassis it hasnt been done yet, or at least up until now.  This is where CPI, Custom Pipes Inc, comes in.  CPI has developed an In-Frame pipe that produces a claimed seven more horsepower then the nearest competitor.  Although at this time we were unable confirm those HP figures on the dyno, we have a testing method that in our opinion is even better in determining the effectiveness of a modification.

Team Source went to our local MX/Drag track and set up our timers for a 300 ft drag race.  For this test we compared the CPI pipes against the Power Pro out-of-frame drag pipes.  In 300 ft bracket drag racing where consistency wins races, we found that the CPI pipes ran a consistent .05 second or less difference between passes, whereas the Power Pro varied as much as .3 seconds between passes.  In bracket drag racing the consistency of the CPI pipes as compared to the Power Pro pipes make the CPIs the favored pipe.

Not only are the CPI's more consistent, they are also easier to ride.  The CPIs have more torque down low with plenty of ability to rev out well into the upper range of the power curve.  The CPIs pulled harder over a broader range as compared to the Power Pros, and additionally the shift points were not nearly as critical as the CPIs had the torque to pull a short shift out.  The Power Pro pipes power delivery is very strong and somewhat violent which makes the quad harder to handle on the drag track.  The CPIs did not have the fastest times of the day, the Power Pros took that honor by a slight margin but the Power Pros also turned the slowest times of the day.

K&K Team Rider Neal MoserFurther testing was in order to see how these pipes would perform on the racetrack in varying throttle situations. Team Source fitted the CPI pipes to the #924 Banshee of K&K ATV Team Rider Neal Moser, who finished 2nd last year in the GNC Open "B" TT Class and is currently ranked 1st in the 25+ Class and 3rd in the Open "A".  At the Challenger Track in which Neal ran these pipes, he placed 2nd in the Open "A" and was leading the 25+ until being spun out placing him back in the pack.  Neal was able to pull 4 solid hole-shots with the CPI pipes on.  This was the only time all year that he was able to get all 4 hole-shots in a single weekend.  After the race, Neal had this to say about the CPI pipes "Although these pipes dont offer quite as much torque way down low that I would like to see, they do offer excellent mid to topend with the ability to pull each gear farther then my normal pipes that I run."

CPI Pipe Rt Hand SideTeam Source has heard stories around the Internet BBSs and chat rooms that the CPI pipes do not fit the Banshee chassis that well.  However we were able to bolt our set of pipes up with ease.  The only problem that we had with the installation was that we had to remove the paint off from the stinger tube joints to get them together a little easier without having to use too much force.  Otherwise installation was easy and straightforward, and comparable to most all other aftermarket pipes for the Banshee.

CPI SilencerThe CPI silencers are the nicest constructed silencers that we have seen for a Banshee.  With the CNC machined end-caps that utilize cap screws instead of the common cheap rivet setup found on most silencers, this makes re-packing the CPI silencers much easier.  Re-packing the CPI was a simple process of removing the screws, removing the end cap and core, wrapping the packing material, and re-installing the core, cap, and fastening complete with the cap screws.  Whereas compared to the rivet style end cap fastening, we did not have to have a drill to remove the rivets, nor have a rivet gun to re-install the rivets.

Overall Team Source rates these pipes very high for fast all around trail, competitive riding, and/or racing.  The CPI pipes are able to combine the best qualities and advantages of Out-of-Frame pipes with that of In-Frame pipes.  They have the ability to rev out just about as high as the Out-of-Frame pipes with nearly the same torque of In-Frame pipes.  Additionally as compared to one another the CPI pipes have the versatility to be ridden in the woods and you have the mobility to hang off the side of your quad while pitching it side ways in those tight corners.  The quality and workmanship of the CPIs is good, and the fit and installation of them is equally as good.

For more info on these pipes or any other CPI pipe you can contact them at:


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