Best 400ex Exhaust In June 2025

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Looking for the Best 400ex Exhaust that can last long and perform well? Read our review and buying guide on Best 400ex Exhaust below.

To help you in your search, we have completed this list of the Best 400ex Exhaust.

Top Rated Best 400ex Exhaust Of 2025

Rank	Product Name	Score
1	SPEEDWOW 2.0" Butt Joint Exhaust Band Clamp Sleeve Stainless Steel Buy Now	9.7 Buy Now
2	Vertex-Winderosa 823003 Exhaust Gasket Kit Buy Now	9.5 Buy Now
3	For 1999-2014 HONDA 400EX HEAT SHIELD HEAVY DUTY HEADER HEAT GUARD"Aluminum" Buy Now	9.1 Buy Now
4	K&N Motorcycle Air Filter: High Flow Performance Air Filter Fits 1999-2014 Honda TRX400 Buy Now	8.8 Buy Now
5	Big Gun Exhaust 07-1122 Eco Slip-On Exhaust System (Color: Brushed, Material: Aluminum) Buy Now	8.6 Buy Now
6	MGOD 1.5-2"Inlet Motor Exhaust Carbon Fiber Muffler with Removable DB Killer for Street/Sport Buy Now	8.3 Buy Now
7	MASSFX Sport ATV 21x7-10 Front and 20x10-9 Rear Tires Full Set ATV Tires Buy Now	8.1 Buy Now
8	FMF Racing 40014 Header Buy Now	7.8 Buy Now
9	Big Gun Exhaust 07-1132 ECO ATV Silver Slip On Exhaust for Honda,Brushed Aluminum Buy Now	7.5 Buy Now
10	Big Gun Exhaust 07-1272 ECO Utility Silver Slip On Exhaust for Honda Buy Now	7.2 Buy Now

1. SPEEDWOW 2.0" Butt Joint Exhaust Band Clamp Sleeve Stainless Steel

• Universal fit for 2.0 inch od exhaust pipe/tip/muffler ect. join your exhaust tubing together quickly without crimps or welding.
• No welding design makes butt joint clamp fast, easy and accurate installation. arc curved face,capability prevent exhaust gas and noise leaks. it is removable and reusable.
• Application:the butt joint exhaust sleeve clamp suitable for exhaust system, muffler, stainless steel material, not easy to rust, corrosion resistance.
• The reaction block provides a full 360 equal distribution of stretching forces, prohipiting pipe distortion while complesing a seal round the joined exhaust components.
• Warranty - spweedwow provide 2.0 inch butt joint exhaust sleeve clamp with 5-month warranty.any product problem, please feel free to contact us.

2. Vertex-Winderosa 823003 Exhaust Gasket Kit

• Honda atc350x 1985 - 1986. honda cb/cl160 1965 - 1969. honda cb/cl175 1969 - 1973. honda cb/cl200 1974 - 1976. honda cb250 nighthawk 1991 - 2008. honda cm185t 1978 - 1979. honda cm200t twin star 1980 - 1982. honda cm250c 1982 - 1983. honda cmx250 1985 - 2016. honda gb500 1989 - 1990. honda sl175 1970 - 1971. honda trx350 1986 - 1987. honda trx350d 1987 - 1989. honda trx...
• Two stroke kit includes o-rings, springs, washer, and gasket. where applicable.
• Ktm four stroke kits include header gasket and replacement springs.
• Four stroke kits contains header gasket.
• Kits for multi cylinder vehicles contain multiple gaskets.

3. For 1999-2014 HONDA 400EX HEAT SHIELD HEAVY DUTY HEADER HEAT GUARD"Aluminum"

4. K&N Motorcycle Air Filter: High Flow Performance Air Filter Fits 1999-2014 Honda TRX400

• Easy installation: pre-oiled and ready to install. one of the easiest and most cost-effective upgrades for your motorcycle or atv for quick performance gains.
• Ultimate longevity: 10-year/million mile limited warranty protects for the life of your vehicle.
• Saves money: k&n high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters.
• Engineered power: state-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration. clogged or dirty air filters can reduce your vehicles acceleration by up to 10%.
• Eco-friendly: using a washable, reusable product helps reduce replacement waste. a k&n filter will last longer than 10 disposable filters.
• World class protection: pushing the limits of engine protection by protecting your engine from harmful contaminants.

5. Big Gun Exhaust 07-1122 Eco Slip-On Exhaust System (Color: Brushed, Material: Aluminum)

• Tig welded reinforced muffler bracket
• 304 stainless steel mid pipe
• Economically priced high quality slip-on exhaust system
• Usfs forestry approved screen type removable spark arrestor included tig welded stainless steel pipe construction 6061 br+am15u

6. MGOD 1.5-2"Inlet Motor Exhaust Carbon Fiber Muffler with Removable DB Killer for Street/Sport

• color: carbon fiber painted,overall length: 370mm,connection: 51mm slip-on type
• condition:100% brand new,material: aluminum & carbon fider
• includes mounting clamp and a 38-51mm adaptor,easy install, no instruction(if you do not have a 50.8mm diameter front or middle link pipe, you will need use 38-51mm adapter.)
• the body made of stainless steel connector,removable db killer, offers difference sound effect
• fitment: universal fits for street/sport motorcycles and scooters with 38-51mm diameter exhaust pipes

7. MASSFX Sport ATV 21x7-10 Front and 20x10-9 Rear Tires Full Set ATV Tires

• Authorized seller with full massfx factory backed warranty
• Quantity= 2 x (21 x 7 x 10) massfx sport atv tires
• Quantity= 2 x (20 x 10 x 9) massfx sport atv tires
• One set of 4 tires 2 rear and 2 front
• Massfx sport atv tires are the leader in the market

8. FMF Racing 40014 Header

• Increase in gas flow up to 10%
• Decreased weight vs. stock
• Fmf does not recommend or guarantee you try to match it to a stock muffler.
• Aftermarket header pipe for your motorcycle or atv
• Lowers exhaust note up to 1.5 dbs.

9. Big Gun Exhaust 07-1132 ECO ATV Silver Slip On Exhaust for Honda,Brushed Aluminum

• Designed to deliver maximum power
• Easy installation, uses stock headpipe
• Lightweight

10. Big Gun Exhaust 07-1272 ECO Utility Silver Slip On Exhaust for Honda

• Lightweight
• Easy installation, uses stock headpipe
• Designed to deliver maximum power