Suzuki GSX-R 1000 accessory exhausts

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Suzuki GSX-R 1000 accessory exhausts
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Exhaust & silencer

Suzuki GSX-R 1000 accessory exhausts

Accessory exhausts for Suzuki GSX-R 1000 (K7 / K8)
Lighter, slimmer, stronger?

MOTORRAD tested 13 accessory exhausts for the Suzuki GSX-R 1000 (K7 / K8) in issue 17/2008.

Holger Hertneck

07/31/2008

Admittedly, tastes are different, but not so different that the voluminous GSX-R rear silencers are not a thorn in the side of the vast majority of motorcyclists. Thus an ideal field for the accessories market, which offers a lot of alternatives. Even Suzuki sells with the Yoshimura GP Evo II a visual treat. Other test participants come from Akrapovic, Arrow, Bos, Gianelli, GPR, KR-Tuned, Laser, Leo Vince, Micron, Mivv, Shark and Termignoni.

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Suzuki GSX-R 1000 accessory exhausts

Accessory exhausts for Suzuki GSX-R 1000 (K7 / K8)
Lighter, slimmer, stronger?

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The evaluation criteria include workmanship, fit / assembly, weight, top performance and performance. First of all, all participants had to flex their muscles on the MOTORRAD test bench. And lo and behold, with the exception of the Micron pots, with which the Suzuki presses three hp less on the roller, the accessory dampers are at least at series level or found, as in the case of Akrapovic, Bos, Gianelli and Termignoni even up to three additional horsepower. A positive result when you think of the performance losses in previous tests with other motorcycle models.

But not only the top performance characterizes good retrofit dampers, the power delivery and the torque curve also play an important role. And in this, some candidates clearly outbid the series. Bos in particular succeeds in smoothing out some drops in the torque curve and, for example, in making around 10 Nm more available in the 3000 rpm range.

Last but not least, when it comes to possible police checks, the stationary and driving noise values ​​and, for the AUK investigation, the emissions behavior are decisive. MOTORRAD carried out these measurements in close cooperation with the Dekra Technology Center in Klettwitz near Dresden. And the results were even more positive than with the performance measurement.
Particularly praiseworthy: All systems passed the often critical noise measurements without any complaints. Criticism is hailing from a number of candidates for the cheap metal clamp holders. Molded clamps made of carbon or screwed or even welded brackets such as those used by Bos, Micron, Shark and Yoshimura are easier to assemble. In contrast to circumferential clamps, they also do not disturb the appearance of the end pots.

Suzuki GSX-R 1000 original silencer


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
Suzuki International Europe, phone 06251/57000, www.suzuki.de
Sheath: aluminum / titanium
Price: 2566.76 euros
Variants: none

plus
Well processed; very good fit, easy assembly; very even power delivery; Standing noise within tolerance range; Driving noise limit complied with

minus
Very difficult; uneven torque curve

Conclusion
Voluminous, heavy and extremely expensive rear silencers that fit perfectly, but are often exchanged for accessory models due to their design.

MOTORRAD verdict: good

Akrapovic Hexagonal Titanium


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
JAMparts, phone 07150/970565, www.akrapovic.de
Sheath: titanium
Price: 1343.51 euros
Variants: carbon 1343.51 euros, with stainless steel connecting tubes 1217.37 euros

plus
Excellent workmanship; good fit and fairly easy assembly; custom-fit carbon clamps; extremely light; slightly higher peak performance than series, also performance and torque curve somewhat better; Standing noise within tolerance range; Driving noise limit complied with

minus
No negative points to be recorded

Conclusion
Ultra-light, finely crafted, but also expensive system, which shares the test victory with the Yoshimura pots.

MOTORRAD verdict: very good

Arrow Titanium Thunder


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
Alpha Technik, phone 08036/300720, www.alphatechnik.de
Sheath: titanium with stainless steel end cap
Price: 949 euros
Variants: aluminum 669 euros, titanium with carbon end cap 1059 euros

plus
Well processed; Fit and assembly still okay; custom-fit carbon clamps; very easy; Power and torque progression almost identical to series production; Standing noise within tolerance range; Driving noise limit complied with

minus
The clamping screws on the intermediate pipe are not exactly aligned

Conclusion
The Titanium Thunder passed the test without any real weakness, the aluminum version being a real alternative in terms of price.

MOTORRAD verdict: very good

Bos slip on stainless steel


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
Bos, phone 05941/4793, www.bosauspuff.de
Jacket: blasted stainless steel
Price: 699 euros
Variants: carbon 899 euros

plus
Well processed; good fit and fairly easy assembly; screwed holder; only accessory damper with holding device for standard plastic cover; easy; slightly higher peak performance than series, also performance and torque curve significantly better; Standing noise just within tolerance range; Driving noise limit complied with

minus
No negative points to be recorded

Conclusion
The most powerful and at the same time cheapest test system in comparison with the subjectively strongest sound, the volume of which is nevertheless within the limit values.

MOTORRAD verdict: very good

Gianelli Slip On Titan


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
M-A-S motorcycle accessories, phone 0911/7530245, www.mas-motorrad.com
Sheath: titanium
Price: 849 euros
Variants: aluminum 599 euros, carbon 849 euros

plus
Well processed; easy; slightly higher peak power than series, power and torque curve similar to series; Standing noise within tolerance range; Driving noise limit complied with

minus
Comparatively complex assembly, not least because of cheap sheet metal clamps with sloppy rubber protection, which is very difficult to assemble; The clamping screws on the intermediate pipe are not exactly aligned

Conclusion
A price tip at just under 600 euros in the aluminum version. One is happy to accept the time-consuming initial assembly.

MOTORRAD verdict: good

GPR Grand Prix Evolution


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
THG Gross, phone 02661/63240, www.bikersandmore.de
Sheath: stainless steel
Price: 744 euros
Variants: aluminum 667 euros, carbon 805 euros

plus
Very well made; Hooks for hanging the tension springs are included in the scope of delivery; Rubber protectors pre-assembled on the sheet metal clamps; still acceptable weight; Power and torque curve similar to series production; Standing noise within tolerance range; Driving noise limit complied with

minus
Moderate fit and assembly; simple metal clamps; Tension springs are in contact with intermediate tubes ?? Rubber protectors charred

Conclusion
Small defects disturb the otherwise good overall picture of the GPR pots, which come up with an independent design.

MOTORRAD verdict: good

KR-Tuned 1/2 system carbon


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers: Hostettler, phone 07631/18040, www.ixs.com
Coat: carbon
Price: 1669 euros
Variants: titanium with carbon end caps 1719 euros

plus
Well processed; Fit and assembly still okay; custom-fit carbon clamps; very easy; Power and torque curve similar to series production; Standing noise within tolerance range; Driving noise limit complied with

minus
The clamping screw on one of the two intermediate tubes is not exactly aligned

Conclusion
Kenny Roberts, a sonorous name, is behind the KR-Tuned system, the most expensive accessory system in the test, which is also noticeable due to its low weight.

MOTORRAD verdict: very good

Laser stealth carbon


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
So Products, phone 05924/78360, www.so-products.com
Coat: carbon
Price: 1057 euros
Variants: stainless steel with carbon end cap 927 euros, stainless steel complete 808 euros

plus
Very well made; screwed holder; Heat protectors on intermediate pipes; easy; Power and torque curve better than series; Standing noise within tolerance range; Driving noise limit complied with

minus
Moderate fit and assembly; To assemble a lot of small parts during initial assembly

Conclusion
The unusually angular mufflers of the Stealth are noticeable, especially when viewed from behind. Once installed, there is no reason to complain.

MOTORRAD verdict: very good

Leo Vince Slip On Evolution 2


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
MCA Service, phone 05139/894906, www.leovince.de
Coat: carbon
Price: 779 euros
Variants: aluminum 589 euros, titanium 815 euros

plus
Very well made; Hooks for hanging the tension springs are included in the scope of delivery; acceptable weight; Performance curve almost congruent with series production, torque curve somewhat better; Standing noise within tolerance range; Driving noise limit complied with

minus
Moderate fit and assembly; to assemble a lot of small parts during initial assembly; simple metal clamps with rubber protectors that are difficult to assemble

Conclusion
A real bargain in aluminum and still inexpensive even in the tested carbon version ?? the cheap metal clamps really don’t have to be.

MOTORRAD verdict: good

Micron GP style


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
Micron Systems, phone 0911/936740, www.micronsystems.de
Jacket: stainless steel coated black
Price: 898 euros
Variants: matt stainless steel 758 euros, polished stainless steel 898 euros

plus
Very well made; very good fit, easy assembly; screwed holder; very easy; more even torque curve with fewer ?? dips ?? as a series; Standing noise within tolerance range; Driving noise limit complied with

minus
Assembly instructions in English; slightly lower peak performance than series

Conclusion
A real eye-catcher, the extremely short, curved Micron mufflers made of one piece. You can get over the somewhat lower peak performance.

MOTORRAD verdict: very good

Mivv GP carbon


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers: Europartner, phone 07682/909004, www.europartner-distribution.com
Coat: carbon
Price: 766.64 euros
Variants: Titan 802.52 euros

plus
Well processed; Fit and assembly still okay; acceptable weight; Performance curve almost congruent with series production, torque curve somewhat better; Standing noise within tolerance range; Driving noise limit complied with

minus
Simple metal clamps

Conclusion
Except for the cheap-looking metal clamps, there isn’t really anything wrong with the Mivv pots. The Italian dampers are also reasonably priced.

MOTORRAD verdict: very good

Shark Conic


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers: Fechter Drive Motorsport, phone 07023/95230, www.fechter.de
Sheath: stainless steel
Price: 758 euros
Variants: none

plus
Very well made; excellent fit and easy assembly; only accessory damper with firmly welded brackets; acceptable weight; Performance curve almost congruent with series production, torque curve somewhat better; Standing noise within tolerance range; Driving noise limit complied with

minus
No negative points to be recorded

Conclusion
The completely edgeless, nicely rounded Conic can be installed in a flash thanks to their perfect fit and are also among the inexpensive offers for the GSX-R.

MOTORRAD verdict: very good

Termignoni GP-Style carbon


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
Fat Cat, phone 07424/9313899, www.fat-cat.eu
Coat: carbon
Price: 1118.95 euros
Variants: titanium core (instead of stainless steel) with carbon shell 1213.95 euros

plus
Well processed; Fit and assembly still okay; easy; slightly higher peak performance than series, also performance and torque curve significantly better; Standing noise within tolerance range; Driving noise limit complied with

minus
Simple metal clamps

Conclusion
The only thing that bothers about the system of the traditional Italian brand are the cheap metal clamps and the steep price. But it tickles a little more power from the Suzuki.

MOTORRAD verdict: very good

Yoshimura GP Evo II


Suzuki GSX-R 1000 accessory exhausts


Bilski

Providers:
Suzuki International Europe, phone 06251/57000, www.suzuki.de
Sheath: titanium
Price: 1655.62 euros
Variants: none

plus
Very well made; excellent fit and easy assembly thanks to excellent assembly instructions; screwed holder; extremely light; Performance curve almost congruent with series production, torque curve somewhat better; Standing noise within tolerance range; Driving noise limit complied with

minus
No negative points to be recorded

Conclusion
Together with the Akrapovic system, the GP Evo II, which shines with extremely clean weld seams and lightning-fast assembly, shares the test victory, but is very expensive.

MOTORRAD verdict: very good

Exhaust gas measurement – a clean affair

In the GSX-R 1000 Are the lambda probe and catalytic converter not in the components affected by the exhaust conversion? It should therefore be possible to rule out a change in exhaust gas behavior due to the installation of retrofit dampers. Nevertheless, MOTORRAD had Dekra test engineers carry out the exhaust emissions test for motorcycles (AUK) with all test dampers. The CO content is determined in percent by volume using a collecting funnel.

Since the Suzuki has two mufflers, the values ​​for right and left are averaged. In the case of the GSX-R, according to the manufacturer, this value must not exceed 0.3 at increased idle speed (2250 / min +/- 250 / min). The Suzuki turned out to be a real clean man, because all dampers with 0.01 to 0.015 were very far below this value. The slight fluctuations in results among the candidates are negligible.

Noise measurement – quiet step


Suzuki GSX-R 1000 accessory exhausts


Bilski

Loud: There is a decent noise level on the 20-meter-long measuring section.

On the extensive test site of the Dekra Technology Center in Klettwitz, right next to the Lausitzring, experienced Dekra testers carried out the stationary and driving noise measurements. The values ​​of the Suzuki GSX-R 1000 entered in the papers are 96 dB (A) for the stationary noise and 79 dB (A) for the driving noise. The stationary noise measurement only serves as a reference value for checking during traffic controls by the police. The tolerance limit is up to five dB (A) above the standard value. When measuring the driving noise, the motorcycle drives in second and third gear at 50 km / h (+/- one km / h tolerance) to the 20-meter-long measuring section and accelerates fully. A microphone 7.5 meters away from the center of the measuring section records the noises. Two passages from the right and two from the left are recorded in each aisle. The total of eight measured values ​​are rounded and then a dB (A) tolerance is deducted. The mean value of this gives the effective driving noise value. And none of the retrofit systems are higher than the series system ?? which at 78 dB (A) is even one dB (A) quieter than stated in the papers.

Conclusion

Well, please, it works: a test of retrofit dampers in which no participant exceeds the permitted noise limit values. Not least because of this, the MOTORRAD judgments are gratifyingly positive. But there are hardly any failures in the other test criteria either. Right at the front are the mufflers from Akrapovic and Yoshimura, just behind them the most powerful and at the same time most affordable test system from Bos, which is why it received the “Best Buy” rating. GSX-R-1000 owners don’t have to worry when looking for alternatives to the voluminous stock dampers ?? There are plenty of recommended replacements.

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