SKU: 80393843760

Pro Circuit - 2-stroke R304 Shorty Silencer - (KTM)

Sale price$167.10 Regular price$185.67
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

Pro Circuit - 2-stroke R304 Shorty Silencer - (KTM)Pro Circuit R 304 Shorty Silencer (KTM) When every twist of the throttle matters, the Pro Circuit R 304 Shorty Silencer is what racers reach for. Designed purely for competition, this compact silencer gives your KTM sharper throttle response, harder midrange punch, and that crisp two stroke bark that just sounds fast. Its lightweight, race tuned, and built to squeeze every ounce of performance out of your setup. The R 304 uses a brushed 6061 T6

Pro Circuit – R-304 Shorty Silencer (KTM)

When every twist of the throttle matters, the Pro Circuit R-304 Shorty Silencer is what racers reach for. Designed purely for competition, this compact silencer gives your KTM sharper throttle response, harder midrange punch, and that crisp two-stroke bark that just sounds fast. It’s lightweight, race-tuned, and built to squeeze every ounce of performance out of your setup.

The R-304 uses a brushed 6061 T6 aluminum body paired with a 304 stainless steel intake tube and end cap, giving you a silencer that’s both strong and feather-light. Inside, E-Glass packing keeps it performing at peak levels longer, and when it’s time for a refresh, the allen-head screws make repacking quick and easy. Every unit is TIG and MIG welded by hand in the USA, built to handle real race abuse while maintaining that factory-level precision.

Why We Like It:
It’s all about that sharp, instant response. The R-304 makes your KTM feel more alive — faster to rev, quicker to recover, and more explosive when you crack the throttle. It’s lightweight, durable, and gives your bike that unmistakable pro-level sound.

Why It’ll Work for You:
This silencer helps your engine breathe and rev faster, which means stronger power where you can actually use it — right off idle and through the midrange. It’s simple to maintain, built tough to survive hard motos, and keeps your bike feeling crisp and responsive ride after ride.

Variants / Options:
Designed for KTM two-stroke models. Intended for closed-course and race use only.

 

Key Features:

  • 304 stainless steel intake tube and end-cap for strength

  • 6061 T6 brushed aluminum silencer body keeps weight low

  • Double-walled mounting bracket for stability

  • E-Glass internal packing for longer life and consistent performance

  • Allen-head screws for quick, easy repacking

  • TIG and MIG welded by hand for race-level durability

  • Made in the USA

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 80393843760

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Boer
Whiting, US
★★★★★ 5
Quick and easy to install
This review is for the INFISTAR AC85111 Cabin Air Filter. To be honest, when I saw this product I was a bit perplexed as to whether our car (Honda Odyssey) even had one! I have never replaced a cabin air filter on any car before. The mechanics might have done so during regular service, but I was not aware of it and had to do an internet search to find out where it would even be installed. Just because of my ignorance, I decided to get it and educate myself. My car actually DID have one and installation would have been a quick and easy job if I remembered to take all the heavy stuff (manuals, etc.) out of the glove box. Because I did not do it, it unhooked it on the right and I had quite a bit of trouble realigning it. If it hadn't been for that, installation would have only take a couple of minutes as it was a breeze. The new filter looks like a good quality product and will last a while. Jury is still out for me on the color though. The old filter was white, so it was easy to see the dirt it trapped. This new filter is almost dirt color which would make it harder to see how dirty it is. However, at such an affordable price, I can replace it as often as I want. I asked my mechanic about it and he said he only replaces cabin air filters if the customer requests it or if he notices a funny odor in the car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
D
Deval
Bozeman, US
★★★★★ 5
Effective Cabin Air Filter – Fresh and Clean Air for My Car
I recently replaced my car’s cabin air filter with the AC85111 activated carbon filter, and I’ve noticed a clear improvement in air quality inside the vehicle. It helps keep the cabin air fresh, especially during daily commutes and long drives. The activated carbon layer does a good job of reducing dust, odors, and outside pollution, making the driving experience more comfortable. I also noticed less smell from traffic fumes and general road dust entering the car. The fit was perfect for my Honda Pilot, and installation was simple without needing any special tools. It is compatible with several Honda and Acura models, which makes it a reliable replacement option. The material feels well-made and sturdy enough for regular use, ensuring consistent airflow while filtering out impurities effectively. Considering its performance and durability, it also offers good value for money. Overall, this is a practical, easy-to-install, and reliable cabin air filter that helps maintain cleaner and fresher air inside the car.
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Reviewed in the United States on May 8, 2026
T
TJ
Lexington, US
★★★★★ 5
Good fit for our Honda Accord, quality filter
This was the perfect fit for my daughter's Honda Accord. It's a solid, budget‑friendly upgrade that fits perfectly. It only took a few minutes to install. The pleated material feels sturdy, and the activated carbon layer helps cut down on odors and everyday cabin dust.
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Reviewed in the United States on May 30, 2026
Z
Zack
Bozeman, US
★★★★★ 5
No more funky smell!
Have had a funky smell for a while in my car. Air fresheners just couldn't quite cover it up. I pulled the old filter out which was reallll caked up with stuff and got the new one in. Not only is the funky smell finally gone, but the HVAC is a lot quieter when on full blast, and it blows the air harder. It fit great, installation was easy, and having the smell gone makes it worth absolutely every penny.
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Reviewed in the United States on April 24, 2026
D
Verified Purchase
Devlin
Lowell, US
★★★★★ 5
happy engine. good mileage
Color: CA9683
Fit my 05 Tacoma great! Have had good response with the engine and it's acceleration. Fuel mileage is back on par. Will buy again!
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Reviewed in the United States on October 18, 2025

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