norseman
Supercharged
I picked up my bike from Carpenter on Saturday. Final numbers with the Reband exhaust and 4040-1 filters was 222 rwhp. SURPRISINGLY to everyone, the 4040-1 filters actually produced a couple more HP than the open velocity stacks. Bob posited that this was due to other environmental factors during the run, and I tend to agree, but it's still a strong endorsement for the filters.
An open velocity stack will always flow easier than a filter, but if (like me) you just can't stomach the idea of running open stacks (and you don't mind sticking your left knee out a little while riding), these KN RX-4040-1 filters do a solid job passing wind to the engine.
I'm also told that they are working on a new design for their awesome Brute exhaust system that will put a bit of a curve in to pull a bit of heat away from your leg without stifling the flow. I personally like the look of a little twist up by the headers, so I'm eagerly awaiting their availability and may end up ordering one to let a few of those extra ponies out.
As for the magic that Carpenter Racing did to my engine... well... I'll post the dyno as soon as I get a chance, but right now I am enjoying what feels like endless ENDLESS amounts of power. The Reband pipe seems to have trimmed a few ponies off the top (I got the 240+ build and only pulled 222) due to the 1.75" headers and exhaust core, but on the dyno it showed an EXCEPTIONALLY even torque curve. There is no mountainous buildup of torque, just a solid 150-170 lb/ft all through the rev range, which makes it very easy to predict and adds to the feeling of limitless, tractable power.
The bike was beautiful when I got it, and I have never for a moment felt it lacked brute strength, but I cannot describe the incredible feeling of having all the potential of that huge juggernaut of an engine clenched in my white knuckled right hand. Three cheers for Triumph making an awesome machine and three more for Carpenter Racing pushing it beyond the pale of pure madness.
An open velocity stack will always flow easier than a filter, but if (like me) you just can't stomach the idea of running open stacks (and you don't mind sticking your left knee out a little while riding), these KN RX-4040-1 filters do a solid job passing wind to the engine.
I'm also told that they are working on a new design for their awesome Brute exhaust system that will put a bit of a curve in to pull a bit of heat away from your leg without stifling the flow. I personally like the look of a little twist up by the headers, so I'm eagerly awaiting their availability and may end up ordering one to let a few of those extra ponies out.
As for the magic that Carpenter Racing did to my engine... well... I'll post the dyno as soon as I get a chance, but right now I am enjoying what feels like endless ENDLESS amounts of power. The Reband pipe seems to have trimmed a few ponies off the top (I got the 240+ build and only pulled 222) due to the 1.75" headers and exhaust core, but on the dyno it showed an EXCEPTIONALLY even torque curve. There is no mountainous buildup of torque, just a solid 150-170 lb/ft all through the rev range, which makes it very easy to predict and adds to the feeling of limitless, tractable power.
The bike was beautiful when I got it, and I have never for a moment felt it lacked brute strength, but I cannot describe the incredible feeling of having all the potential of that huge juggernaut of an engine clenched in my white knuckled right hand. Three cheers for Triumph making an awesome machine and three more for Carpenter Racing pushing it beyond the pale of pure madness.
Last edited: