Quality and TextureThe GP-Magnum full exhaust system from Yoshimura is constructed from high-quality stainless steel with a polished finish for the piping. The silencer features a carbon fiber cover paired with polished stainless steel end caps. The overall fit and finish are flawless, reflecting Yoshimura’s reputation for premium craftsmanship.Feeling of UseThis full system offers significant weight savings compared to the stock exhaust. It also provides a deeper, more aggressive sound and greatly enhances the visual appeal of the bike. It’s a noticeable upgrade in both performance and aesthetics.Recommended Additional ProductsAn aftermarket exhaust is usually my first modification on a Honda Grom. Following that, I recommend upgrading the suspension to address the stock setup, which tends to be under-sprung.Installation DifficultyInstallation was straightforward and took about an hour. Basic hand tools and a bit of mechanical aptitude are all that’s needed to fit the system to the engine, frame, and rearset. The instructions were clear, and everything aligned as expected.Cost Performance and ComparisonYoshimura products are typically priced higher than competitors, but in this case, the GP-Magnum full system is competitively priced and offers great value. It’s on par with other high-quality offerings in the market.Shipping and PackagingTo save on shipping costs, I opted for sea freight over EMS. The money saved was put toward other parts. Despite the longer delivery time, the exhaust arrived extremely well-packaged—protected in bubble wrap and air pillows within a sturdy cardboard box.Concerns, Cautions, and Purchasing AdviceI highly recommend purchasing from Webike Japan. It’s my go-to source for everything motorcycle-related—from service items to performance upgrades and riding gear. They consistently offer great availability and competitive pricing.
View DetailMachine Bent GP-MAGNUM Cyclone EXPORT SPEC Full Exhaust
Product # 110A-43G-5U50
5 (6 reviews)38,644.9 ~ BDT (47,300 JPY)
Delivery Information
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Please select product form first.
FITMENT
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GROM
21 Domestic model [Vehicle type]2BJ-JC92 [Engine type]JC92E
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GROM
21 Thailand [Vehicle type]JC92 [Engine type]JC92E
Product detail
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For driving on public roads ◯
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Weight 2.8
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Certification Standards Government Certification
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Race-specific products ×
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Acceleration noise (dB) 77
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Proximity exhaust noise (dB) 90
[Material] Stainless steel
[Proximity exhaust noise]
Domestic specifications:90dB / 3625rpm
・Thailand Specifications:90dB / 3625rpm
[acceleration noise]
Domestic specifications:77dB
・Thailand Specifications:78dB
[weight](std:3.3kg)
・Stainless steel cover:2.8kg
Satin finish cover:2.8kg
・Titanium blue cover:2.6kg
Carbon cover:2.5kg
[Specification]
Certificate of Vehicle Emission Test Results (Gas Repo):existence (at the present moment)
・Government certified exhaust JMCA certified
Conforms to exhaust gas regulations Conforms to noise regulations
Manufacturer's 2-year warranty
・Oil change: possible
**The image of the silencer alone is an image of other models.
*A stock Honda exhaust gasket is required.
*Silencer type:The image of the stainless steel cover is silencer type:Satin finish cover.
*The production of this cyclone is partially carried out in Yoshimura Asia (Thailand).
*Images may contain other products.
*There may be changes in product specifications due to the manufacturer's reasons.
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The GP-MAGNUM Cyclone has a simple round design, but is finished with well-designed parts to make it a stylish addition to your unique GROM.
The GP-MAGNUM has a powerful exhaust sound from the opening of the throttle, and the power and torque increase in almost all areas, and the power from the opening of the throttle and the acceleration from mid to high speed will make riding more fun.
The weight is 2.5g (carbon cover) compared to STD 3.3kg, which is 24% lighter.
YOSHIMURA's logo is placed on the rubber of exhaust spring to prevent resonance noise.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
Anthony barry
gidday by cutting the baffle on the header pipe did it make any difference as i have the same on my 2019 honda monkey
1 year ago