3 Best Exhausts for Raptor 660 in 2021: Reviews & Buyer’s Guide

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If you own a Yamaha raptor 660, you have likely noticed the stock exhaust. It doesn’t have the best sound, I think. Fortunately, there are a lot of exhausts for raptor 660 that can create nice exhaust notes as well as they’re made to improve the performance of your raptor.

We discuss the three best exhausts for raptor 660 in this guide. You’ll get these aftermarket exhaust systems affordable in price. Above all, your raptor will get a better sound. It’s worth spending a little time thinking about what exhaust you want from the slip-on and full exhaust below. You get the best, I think!

What is the best exhaust for Raptor 660? Your decision matters!

1. HMF 041353606071 Performance Exhaust

best exhaust for Raptor 660

Thanks to HMF for bringing performance exhausts for Yamaha Raptor 660. Here’s the performance series exhaust designed with a 2 1/8″ non-restrictive core. You’ll get maximum flow from it. The exhaust can be used for several Yamaha Raptor 660 and depending on the model, and you get a 4-6 dB increase over stock exhaust. The HMF 041353606071 Performance Exhaust is structured of T6061 Aluminum, making the exhaust durable and lightweight. The goodness is that you’ll receive these HMF off-road exhausts with a USFS approved spark arrester. I experienced a nice sound. It’s easy to install.


  • Product Dimensions: 12 x 8 x 32 inches
  • 4-6 dB increase over stock exhausts
  • USFS approved
  • Two Year Warranty
  • Non-restrictive core for maximum flow
  • It weighs less than stock exhausts
  • Aggressive, nice sound
  • Cold starting is a challenge sometimes

2. Big Gun Exhaust 07-2612 ECO UTILITY Silver Slip-on Exhaust (Best for Raptor 600R)

Big Gun Exhaust 07-2612 ECO UTILITY Silver Slip-on Exhaust (Best for Raptor 660 & 600R)

This exhaust can be installed on Yamaha Raptor 660 (01-05) even though we discovered customers reviewing this slip on after using it on their 2006 660 raptors. I bet the raptor fits exactly as Eco Series Exhausts, and they are slip-on systems only. Let’s discuss the exhaust. The construction involves a few things like performance, power, sound, and craftsmanship so that the Big Gun Exhaust delivers top-notch performance without hurting your wallet. As the thing is made for the most popular dirtbikes, I have seen my friend using it on his 2005 Raptor 660R. It looks like it fits 660R models too. Be mindful of checking the product’s dimension and compatibility.


  • Package Dimensions: 24.35 x 8.35 x 8 inches
  • Fits Yamaha Raptor 660 (01-05)
  • .049 stainless steel tubing
  • 6061 brushed aluminum muffler canister
  • Delivers maximum power
  • Great at a budget price
  • The most popular Eco series is for slip-on systems only
  • You’ll have to buy a replacement OEM exhaust gasket

Related: Best Air Filters for Raptor 700: (Raptor 700R Air Filters)

What’s the best raptor 660 full exhaust?

HMF Yamaha Raptor 660 2001-2005 Brushed/Pol Full Exhaust Muffler + JET + KN

HMF Yamaha Raptor 660 2001-2005 Brushed/Pol Full Exhaust Muffler + JET + KN

Woah! This performance series exhaust is a full exhaust muffler with small round jets 140, 145, 150, 155, 160, and KN filters. The good first, I think! The fitment is just accurate after bolting up. It runs right away. You’ll experience a noticeable change in performance which is optimized with a 2 1/8″ non-restrictive core. The manufacturer bets 4-6 dB increase overstock. The process was a headache, a reviewer named Jacob Nelson said. I would love it if HMF included no directions for which size replaced which jet. I talked to the manufacturer and told them to add float bowl seals too! However, you will find a great performance than the stock parts.


  • Product Dimensions: 12 x 8 x 40 inches
  • Made of T6061 Aluminum
  • 4-6 dB increase over stock
  • USFS approved spark arrester
  • Fit was good
  • Clear change is seen in performance (Optimized)
  • Weigh less than stock
  • The jets were stamped; they should come with directions included!

Similar full exhaust for raptor 660:

Which Is Faster, yfz450 or Raptor 660?

Well, a YFZ450 goes 76 miles per hour at 10 000 RPM. An exhaust can make max HP it jetted correctly. On the other hand, the Yamaha Raptor 600 or 660R can go 80 to 95 miles per hour. Sometimes, the ATV is equipped with an electronic limiter. For being that case, you don’t get speeds in excess of 100 miles per hour. We can’t specify the acceleration for some says their 660 is faster, where others say their 450 to be with good power. From experience, I would say the raptor 660 has much better acceleration if it hit 5th gear. The truth is YFZ450 starts in second with good power, and the 660 has to start in 1st mostly.

Resources: Yamaha Raptor 700 Vs. YFZ450 Special Editions

Why Is My 660 Raptor Smoking?

This question has several answers though we try answering some professional’s answers.

Sometimes, you’ll see your raptor blowing blue smoke if kept in 2nd gear. People often experience blue smoke out of the pipe when they let off the throttle in any gear. Any thought of it? Will you suppose to reject this air filter or not?

If I answer, the problem happens with the Raptor head for ages. In Yamaha 660 engines, the manufacturer involves too much valve stem to guide clearance. Through the intake ports, the oil is sucked into the combustion chamber. As a result, you have a real oil problem with intake valves.

What’s the solution, then?

  • Remove the carbs and rubber manifolds
  • Check the intake ports for oil film
  • Take a white towel to use in the intake ports
  • The visual towel test shows oil if you have the problem
  • Please take it to Yamaha hell to manage defect of the manufacturing process

Which Is Better, Raptor 660 or 700?

The Raptor 700 is an evolution that happened after the evolution of the 660 and was released as a 2006 model. I think The Raptor 700 has been designed for more torque with a larger-bore aluminum cylinder for 686cc. Thanks to Yamaha for continuing making a new frame. The construction of the 700 is upgraded to the previous sport quad king, and the suspension is updated with better geometry to gain better travel in the rear. I will say, the Raptor 700 has better handling characteristics than the Raptor 600. Definitely, The raptor 700 has a more powerful engine and a sleeker look. It’s king!

Related: Best Exhaust for Yamaha Raptor 700 (R/SE): Reviews & Buyer’s Guide


The best exhaust for the raptor 660 will add extra value to the raptor. I think raptor 660 is an impressive all-terrain vehicle in terms of engine capability but not in terms of sound. If you decided to sound like all other upgraded ATVs on the road, be mindful of choosing from these top-quality exhausts. I bet you’ll notice aftermarket raptor 660 exhausts will dramatically improve the sound at a higher speed. Have the right purchase for you!

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