Not very many pipes are as clean and sexy as the carbon fiber offering from Yoshimura. This pipe is a WINNER!

The jiggy-1K is definitely fast enough in stock form at 157 hp. This outright power isn't the problem; the problem comes from the black, unsightly canisters that dangle from both sides of the bike like infectious growths.

Of course, exhaust upgrading isn't only about appearances. We're really not that vain. The restriction of the GSX-R benefits both the health of the environment and the sanity of your neighbors. Yoshumur R&D have solved this problem for you, so fear not!

Yaoshimura is very familiar with the competition. The company's knowledge about tuning a Suzuki GSX-R can be easily seen in the eight Ben Spies and Mat Mladin Superbike Championships that have been won over the last nine years.

There are five pieces in the TRC exhaust system : the carbon fiber muffler, the stainless steel header, flanges and manifold, and the tail pipe. The whole system is held together by ten exhaust springs and a pair of clamps. Even looking closely, the details are exceptional. The welds defy perfection with their seamlessness, and the thick, gold pipes look like they're some kind of mechanical artworks. The beautiful, lightweight carbon fiber muffler seems like it could be used in a NASA space shuttle.

Top End Power gains aren't as strong as we expected but the mid-range is much beefier.

Yoshimura Power Gains

Peak numbers only gained slightly, which was surprising. Still, with the augmented exhaust, the mid-range of the Gixxer was significantly boosted from 6000 rpm to 10,000 rpm before the lines converged again. Over-rev has a slight increase and there's a slower top-end power signoff, so that's another advantage over the basic configuration. Peak numbers only increased slightly, which we were surprised by. Nevertheless, with the altered exhaust, the middle range of the Gixxer was seriously amped from 6000 rpm to 10,000 rpm before the lines met again. Over-rev saw a marginal increase and there was more gradual top-end power signoff, so that was another benefit over the stock configuration.

We used a Mickey Cohen Motorsports' Dynojet 200i dyno to test our upgraded superbike, and were again surprised when we witnessed only slight gains in peak numbers - just over 1 hp and 1 foot-pound of torque. With the altered exhaust, the middle range of the Gixxer was nevertheless seriously bumped from 6000 rpm up to 10,000 rpm before the lines converged again. Over-rev had a minimal increase, and the top-end signoff was slower, so that presents another benefit above the stock configuration.

The advanced fuel injection system of the GSX-R1000 means that remapping isn't necessary to have a machine that runs cleanly. Engine performance can still be augmented by buying a differen fuel injection module, like Dynojet's Power Commander, and having an official Dynojet Tuning Center install it professionally. The Tuning Center can increase your torque and horsepower, in addition to creating a customized map of your bike to smooth your power curve out.

The big Suzuki's appearance is completely transformed by the Yoshimura system. The back of the bike appears to be much less cluttered. In field tests, it's hard to measure a weight improvement but the scales don't lie and this svelte little thunderpipe put our Gixxer on the scale at 447 pounds. That took a WHOPPING 19 pounds off of stock! This would show on the racetrack.

A ride around town showed us a crisp response from the throttle, and the excellent sounds coming from the carbon fiber muffler told everyone around that this bike was something unique. Ultimately, the Yosh system added a lot to the riding experience. Yosh has what you want if you want to make your bike lighter, give it some roar and power, and sharpen up your bike's aesthetics.

Buy Yoshimura GSXR 1000 Exhaust here.