Table of contents
- Product test retrofit silencer for Suzuki Bandit 1250 / S Retrofit silencer
- Suzuki Bandit: original silencer
- Arrow: Race Tec
- BOS: slip-on oval 120
- Gianelli: Ipersport Alu
- GPR: Grand Prix Evolution
- Performance and noise measurements: numbers, data, facts
- Hashiru: Inox
- Holeshot: Master
- MOTORCYCLE purchase tip: Hurric: RAC 1
- Ixil: Conical Xtrem Shorty
- MOTORRAD test winner: Laser: Duo-Tech
- Leovince: Evo II oval
- Sebring: Twister
- Shark: Conic
- Streetfighter: aluminum rear silencer
- Final scoring
Artist
accesories
Exhaust & silencer
Product test retrofit silencer for Suzuki Bandit 1250 / S
Product test retrofit silencer for Suzuki Bandit 1250 / S
Retrofit silencer
For the mighty muffler of the big bandit there are plenty of cheap alternatives on the accessory market. MOTORRAD tested 13 aluminum and stainless steel pots for retrofitting.
Holger Hertneck
08/13/2009
Large-displacement motorcycles usually only pass the legal noise regulations if they are equipped with silencers that work according to the reflection principle and are therefore correspondingly voluminous. At least the vehicle manufacturers seem to be of this opinion. The Suzuki Bandit 1250 / S is a case in point. The manufacturers of retrofit systems, on the other hand, usually rely on absorption dampers, which can be much slimmer due to their design and are therefore popular with many bandit owners as a prettier alternative. Another reason for the willingness to convert is the poor sound of the series system. In the opinion of their owners, powerful motorcycles can also sound powerful – ideally within the legal framework. This is supposed to be guaranteed by the EC operating permit (EG-BE), which is only given silencers whose exhaust and noise values are in accordance with the law. The fact that accessory silencers are usually much lighter than the original exhaust and often cost significantly less also makes them interesting.
MOTORRAD invited 13 inexpensive retrofit models in aluminum and stainless steel to a large comparison test. All candidates manage without a catalytic converter, as this is in the Bandit’s collector under the engine and is not affected by the conversion. The test criteria include the following:
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Processing (10 points):
Unclean weld seams, protruding, sharp-edged clamps or end tubes that have not been deburred are quality defects and will be punished with point deductions.
Fit / assembly (15 points):
How easy is it to assemble the silencers? Is the accuracy of fit on the pipe transitions and on the brackets correct? Do you have to assemble a lot of small parts or do a few simple steps suffice for the attachment? How many tools do you need? Few manufacturers include self-explanatory assembly instructions. The one-piece Shark-Conic muffler can be installed particularly quickly and easily. The whole thing is much more difficult with the Ixil, where the lower strut mount has to be dismantled for the supplied main stand stop.
Weight (15 points):
Every kilogram saved improves the bandit’s power-to-weight ratio. Although every gram doesn’t really count with the 1250, a lightweight muffler has never harmed a motorcycle. All tested accessory pots are between two and four kilograms lighter than the 6.5-kilogram series.
Top performance (30 points):
How well does the test system stand in the feed? Does the accessory pot even lose valuable horsepower compared to the series? Increases in output of 20 hp as with the 1200 bandit models, which in the 1990s were still throttled to 98 hp via the exhaust, are no longer possible by adding a retrofit damper to the Bandit 1250. With more than six HP more power than the standard system, the Leovince muffler is ahead in this rating. Adding the GPR and Ixil models leads to a loss of around ten horsepower.
Performance development (30 points):
A harmonious, even development of power and torque without serious drops over the entire speed range brings plus points.
Stationary and driving noise: MOTORRAD checked the noise values in cooperation with the specialists from the Dekra Technology Center (see box on page 101). It was found that only a few of the tested accessory silencers comply with the legally relevant driving noise limit values. That is why not all candidates receive a MOTORRAD verdict in this test. This is confirmed by the Bandit developers, who have given the large-displacement machine a very voluminous reflective muffler. It may not look nice, but it easily complies with the applicable noise limits.
Suzuki Bandit: original silencer
Bilski
Suzuki Bandit: original silencer
Providers: Suzuki International Europe, phone 06251/57000, www.suzuki.de
Coat: Stainless steel; Price: 648.12 euros
Variants: noPlus:
Very well made; welded holder; absolutely perfect fit; one-piece, therefore assembled very quickly; still good peak performance and performance development; Driving noise limit complied with; Standing noise clearly within tolerance range
Minus:
Very difficult
Conclusion:
Very voluminous, heavy muffler, which is neatly processed, fits perfectly and easily complies with the legal noise limits. Sound: very high-pitched, sterile, a bit uncomfortable, rather disappointing.
MOTORRAD verdict: Good
Arrow: Race Tec
Bilski
Arrow: Race Tec
Providers: Alpha technique,
Telephone 08036/300720, www.alphatechnik.de
Coat: Aluminum; Price: 488 euros
Variant: Titan 618 euros
Plus:
Still well processed; good fit; very easy; Maximum performance and performance development well above series level; Standing noise within tolerance range
Minus:
No assembly instructions; fiddly metal clamp on the damper; Driving noise limit exceeded
Conclusion:
The most expensive retrofit damper in comparison brings some more horsepower and saves several kilograms
one, but is officially too loud. Sound: rather inconspicuous, slightly aggressive undertone.
MOTORRAD verdict: -*
BOS: slip-on oval 120
Bilski
BOS: slip-on oval 120
Providers: Bos,
Telephone 05941/4793, www.bosauspuff.de
Coat: Aluminum; Price: 419 euros
Variants: Stainless steel 449 euros, carbon 529 euros
Plus:
Very well made; screwed holder; very good
Fit and assembly instructions; very easy; Maximum output
and performance development very clearly above series level; Standing noise within tolerance range
Minus:
Driving noise limit exceeded
Conclusion:
Comparatively long pot with great performance values and in the usual high Bos processing quality, but a bit too loud. Sound: chubby-bassy, full-sounding and very mature.
MOTORRAD verdict: -*
Gianelli: Ipersport Alu
Bilski
Gianelli: Ipersport Alu
Providers: M-A-S motorcycle accessories,
Telephone 0911/7530245, www.mas-motorrad.com
Coat: Aluminum; Price: 379 euros
Variants: Stainless steel 449 euros, titanium 499 euros
Plus:
Well processed; Assembly Instructions; very easy; Maximum performance and power delivery well above series level; Standing noise just within tolerance range
Minus:
Fiddly metal clamp on the damper; Intermediate pipe /
Damper fit somewhat tight; Driving noise limit clearly exceeded
Conclusion:
The silencer with a rhombic cross-section
convinces with its low weight and the
good performance values, but a lot for official ears
too loud. Sound: a bit bright and high-pitched.
MOTORRAD verdict: -*
GPR: Grand Prix Evolution
Bilski
GPR: Grand Prix Evolution
Providers: THG Gross, phone 02661/63240,
www.gpr-deutschland.de;
Coat: stainless steel
Price: 429 euros;
Variants: Poppy (stainless steel in
Carbon look with carbon end cap) 465 euros, titanium 510 euros.
plus:
Very well made; good assembly instructions;
very easy; Standing noise within tolerance range
Minus:
Conical damper shape makes it difficult to position the
Sheet metal clamp; Maximum performance and performance development
very clearly below series level; Driving noise limit clearly exceeded
Conclusion:
A cross-sectional shape running from round to oval is one of the special features of the lightweight GPR. Loss of performance and excessive noise levels set it back a long way. Sound: very aggressive, rowdy.
MOTORRAD verdict: -*
Performance and noise measurements: numbers, data, facts
Hertneck
Driving noise measurements with radar monitoring; Stationary noise measurement with speed control device; Performance measurement on the roller dynamometer.
As with previous exhaust tests, the MOTORRAD editorial team received active support from the experts at the Dekra Technology Center in Klettwitz, which is located around 50 kilometers north of Dresden right next to the Lausitzring. There you will not only find the most modern performance and engine test benches, but also an extensive area for test drives of all kinds.
Performance measurement:
All candidates flexed their muscles on the Dekra roller test bench. Engine power and torque were recorded over the entire speed range. The respective maximum values are listed in the table at the bottom right. The curves that are also included in the scoring can be found in the associated data boxes.
Standing noise measurement:
For checks during traffic checks by the police, the tolerance limit is up to 5 dB (A) more than entered in the papers. The Bandit paper value is 84 dB (A), the tolerance limit is 89 dB (A). But even if the limit is not exceeded, the law enforcement officers can withhold the vehicle for an all-important driving noise measurement in the event of justified doubts, because only this is considered authoritative before the law. When measuring stationary noise, the microphone is positioned at the level of the exhaust outlet at an angle of 45 degrees to the vehicle’s longitudinal axis and at a distance of 0.5 meters. The measurement takes place at a standstill at half the nominal speed – with the Bandit, which develops its maximum output at 7500 rpm, thus at 3750 rpm. The result is the highest of three measured values, rounded to full dB (A). The result is astonishing: some of the accessory dampers don’t even make the tolerance limit.
Driving noise measurement:
It takes place on a large area with normal asphalt. There must be no sound-reflecting objects within 50 meters of the measuring section (see photo above). During the recording, the motorcycle drives in second and third gears at a constant 50 km / h (plus / minus one km / h tolerance) towards the measuring section and then accelerates fully by suddenly pulling the gas. In each of the two gear steps, two passages from the right and two from the left are recorded. The total of eight measured values are rounded and then a 1 dB (A) tolerance is deducted. The mean value of this gives the official driving noise value.
Vehicle requirements:
The test motorcycle for homologation or re-measurements of accessory silencers with a series system may exceed the driving noise value entered in the papers – for the Bandit 1250 this is 78 dB (A) – by a maximum of 3 dB (A), but the valid limit value of 80 dB (A) only by 1 dB (A). Thus, the Bandit should reach a maximum of 81 dB (A).
MOTORRAD allows the test facilities this generous tolerance limit. And yet more than half of the candidates are in some cases significantly higher. The roaring loud Hashiru pot kills the bird with 88 dB (A) driving noise.
Hashiru: Inox
Bilski
Hashiru: Inox
Providers: Polo express delivery, phone 0180/5225785, www.polo-motorrad.de
Coat: Stainless steel; Price: 289 euros
Variants: no
Plus:
Well processed; good fit and assembly instructions; extremely light
Minus:
Simple sheet metal clamp on the damper; Maximum performance and performance development well below the standard level; Standing noise much too high; Driving noise limit extremely exceeded
Conclusion:
The tiny little Hashiru is the lightest and loudest test participant. Already in the first traffic-
control threatens the end of the journey for the weakening final pot. Sound: evil, rowdy, very intrusive.
MOTORRAD verdict: -*
Holeshot: Master
Bilski
Holeshot: Master
Providers: Mizu,
Telephone 07731/90670, www.mizu.de
Coat: Stainless steel; Price: 368 euros
Variants: no
Plus:
Very well made; Sheet metal clamp through clamping screw
permanently fixed; good fit; easy; Maximum power and
Performance above series level; Standing noise within tolerance range; Driving noise limit complied with
Minus:
No assembly instructions; fiddly at first assembly
Sheet metal clamp on the damper
Conclusion:
No frills, classically round cross-section and relatively voluminous. If the driving noise measurement passes –
as a replacement for the standard damper, it is a good and completely legal choice. Sound: strong, solid, serious.
MOTORRAD verdict: very good
MOTORCYCLE purchase tip: Hurric: RAC 1
Bilski
Hurric: RAC 1
Providers: Fechter Drive Motorsport,
Telephone 07023/95230, www.fechter.de
Coat: Aluminum; Price: 269 euros
Variant: Carbon 369 euros
Plus:
Very well made; screwed holder; good fit;
Assembly Instructions; very easy; Maximum power and
Performance above series level; Driving noise-
Limit value complied with
Minus:
Standing noise much too high
Conclusion:
The cheapest system fits perfectly to the Bandit, brings a little more performance compared to the series, exists
the driving noise measurement and receives the purchase tip. Sound: inconspicuous, somewhat aggressive undertone
MOTORRAD verdict: very good
Ixil: Conical Xtrem Shorty
Bilski
Ixil: Conical Xtrem Shorty
Providers: Paaschburg & Whimsical,
Telephone 040/2482770, www.pwhamburg.de
Coat: Stainless steel; Price: 399 euros
Variant: Aluminum (black anodized) 399 euros
Plus:
Very well made; good fit and assembly instructions; very easy; Standing noise clearly within tolerance range;
Driving noise limit complied with
Minus:
Simple sheet metal clamp on the damper; Main stand stop
expensive to assemble (on lower strut mount);
Maximum performance very clearly below series level
Conclusion:
The only bolt-on variant in the test (muffler screwed to the intermediate pipe) has legal driving noise values, is somewhat complex to assemble and costs performance. Sound: robust, a bit rowdy and intrusive.
MOTORRAD verdict: sufficient
MOTORRAD test winner: Laser: Duo-Tech
Bilski
Laser: Duo-Tech
Providers: IXS,
Telephone 07631/18040, www.ixs-technicaldivision.de
Coat: Stainless steel; Price: 419 euros
Variants: Carbon 579 euros, titanium 579 euros
Plus:
Very well made; screwed holder; very precise
and quickly assembled; good assembly instructions; easy;
Maximum performance and power delivery well above
Series level, stationary noise clearly within tolerance range; Driving noise just within tolerance range
Minus:
No negative points to be recorded
Conclusion:
This is where workmanship, fit, performance and the stainless steel case shine. In addition, the test winner passed the noise measurements – albeit extremely tightly. Sound: substantial, powerful, very sporty.
MOTORRAD verdict: very good
Leovince: Evo II oval
Bilski
Leovince: Evo II oval
Providers: MCA service,
Telephone 05139/894906, www.leovince.de
Coat: Aluminum; Price: 329 euros
Variants: Carbon 429 euros, titanium 339 euros
plus:
Excellent workmanship; precisely and quickly installed; Assembly Instructions; very easy; Maximum power and
Performance development very clearly above series level; was standing-
noise just within tolerance range
minus:
Fiddly metal clamp on the damper; Driving noise limit clearly exceeded
Conclusion:
At the top of the test field in terms of performance. The excellent workmanship and great fit are also convincing, but the excessive driving noise value is not. Sound: very powerful, full and bassy.
MOTORRAD verdict: -*
Sebring: Twister
Bilski
Sebring: Twister
Providers: Mizu,
Telephone 07731/90670, www.mizu.de
Coat: Aluminum; Price: 362 euros
Variant: Titan 457 euros
Plus:
Excellent workmanship; screwed holder; very good
Fit and assembly instructions; easy; Maximum output
and performance development above series level; Standing noise within tolerance range; Driving noise just now
within tolerance range
Minus:
No negative points to be recorded
Conclusion:
There is nothing noteworthy to complain about with the finely crafted and easy-to-assemble Twister – it is not quite enough to win the test, but at least it made it to second place. Sound: inconspicuous, somewhat high-pitched
MOTORRAD verdict: very good
Shark: Conic
Bilski
Shark: Conic
Providers: Fechter Drive Motorsport, phone 07023/95230, www.fechter.de;
Coat: Stainless steel price: 379 euros;
Variant: Black Edition
(Stainless steel black matt) 529 euros
plus:
Excellent workmanship; welded holder;
extremely precise; as one-piece, can be assembled very quickly;
Assembly Instructions; extremely light; Maximum output
and performance development well above series level
Minus:
Standing noise much too high; Driving noise limit value
clearly exceeded
Conclusion:
Rank, slim and light, plus great surfaces-
finish, excellent performance values and very easy assembly; with the stationary and driving noise measurements, however
in the red area. Sound: chubby, full-bodied, robust.
MOTORRAD verdict: -*
Streetfighter: aluminum rear silencer
Bilski
Streetfighter: aluminum rear silencer
Providers: Louis,
Telephone 040/73419360, www.louis.de
Coat: Aluminum; Price: 269.95 euros
Variants: no
Plus:
Well processed; good fit; Sheet metal clamp permanently fixed by clamping screw; Assembly Instructions; extremely light
Minus:
Fiddly sheet metal clamp on the damper during initial assembly;
Maximum performance and performance development below series level; Standing noise much too high; Driving noise limit value
clearly exceeded
Conclusion:
Ultralight, is one of the cheapest offers with the Hurric. Good fit and workmanship, but also loss of performance and noise levels that are far too high. Sound: aggressive, slightly bassy, a bit screeching.
MOTORRAD verdict: -*
Final scoring
BILLION
Conclusion:
The driving noise limit breaks the neck of many a hopeful candidate. If you put one of these pots in a control device that is clearly too loud, you shouldn’t be surprised if your bike is withdrawn from traffic – despite EG-BE. Only six participants will receive a MOTORRAD judgment. Laser grabs the test victory, the cheap Hurric receives the buy tip. Even Holeshot in fourth place gets a “very good”, and for the overweight series system it’s enough for one “Good”. Due to the comparatively complex assembly and significant performance losses, there’s for the Ixil “sufficient”.
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