Need Assistance?
Legendary Service... Ask Your Friends - Since 1969
800.969.7501
Over 160K Powersport Items - In-Stock and ready to ship today! View tires, apparel, helmets, exhaust and more!

DG RCM II Muffler - 051-2145

  • Part #:
    434121
  • Manufacturer Part #:
    051-2145

MSRP Price: $249.95

Our Price: $224.96

You Save:
$24.99 (10%)
2 on Hand

Overview of DG RCM II Muffler - 051-2145

  • All steel muffler featuring an aluminum turn down end cap
  • Removable screen type spark arrestor included
  • For replacement spark arrestor use part number 432946

Specs for DG RCM II Muffler - 051-2145

Color - Primary Black
Style Canister Muffler
Type Muffler/Silencer w/Spark Arrestor
Units Each
Weight 8.25 lbs

Specs for DG RCM II Muffler - 051-2145

Color - Primary Black
Style Canister Muffler
Type Muffler/Silencer w/Spark Arrestor
Units Each
Weight 8.25 lbs

Fitment for DG RCM II Muffler - 051-2145

See if this part fits your ride

Part 434121 fits the following machines

Honda
  • 2014 Honda TRX450ER
  • 2013 Honda TRX450ER
  • 2012 Honda TRX450ER
  • 2009 Honda TRX450ER
  • 2008 Honda TRX450ER
  • 2007 Honda TRX450ER
  • 2006 Honda TRX450ER
  • 2012 Honda TRX450R
  • 2009 Honda TRX450R
  • 2008 Honda TRX450R
  • 2007 Honda TRX450R
  • 2006 Honda TRX450R
4.7 / 5.0
17 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
12
4
1
0
0
Finish
4.6 / 5
Performance
4.7 / 5
Loudness
Very Quiet
Average
Very Loud
Finish
5 / 5
Performance
3 / 5
best bang for your buck!
This muffler is awesome. It looks great. It installed in minutes, perfect fit. A little louder than I originally wanted, but it is not an annoying loud like other mufflers. Overall, very happy with this one.
December 28, 2010
Finish
4 / 5
Performance
5 / 5
Great power return for price and easy installation
I just installed this muffler a 07 Honda TRX400EX and ran it for the first time last weekend...WOW!...there was a big difference in power especially in 2nd gear. The sound is not too loud, but still loud enough to hear your machine and let others know where you're at.

The finish on the muffler is kind of little low grade and it nearly rubs on the frame when installed. The muffler mounts are slotted so you can adjust it and keep it from rubbing. The whole installation was really easy and took less than 1 hour, I actually installed it the morning before riding. The instructions mention using a clamp to hold the muffler on, but mine did not come with a clamp and still seems to be solid with the additional bracket provided.

CON: The muffler does stick out past the grab bar so if you drag your grab bar on the ground alot be aware.

SUMMARY: Good power for a cheap price! Easy install and not a bad look! Buy it...you won't be sorry!
September 21, 2010
Finish
5 / 5
Performance
5 / 5
Money
Just installed this slip-on on my 01 raptor and im very pleased. The sound, the throttle response are awsome. Highly recommend if you dont want to spend top dollar for a slip-on and are looking for sound and proformance instead of flashy paint and chrome this is the slip-on for you. Oh yeah, installed it in less then 1 hour.
August 19, 2010
Finish
3 / 5
Performance
5 / 5
No Review Title Entered By User
No Review Text Entered By User
November 15, 2010
Finish
5 / 5
Performance
5 / 5
RCM II Muffler
Amazing pipe
Bought for my 07 300 EX installed in minutes looks great sound really good.
June 5, 2012
Finish
4 / 5
Performance
5 / 5
great,cheap power
worked great was easy to install recomnded jetting all worked great and you can feel the power it gives you
April 22, 2011
Finish
5 / 5
Performance
5 / 5
Love it!
I put this on my 05 400ex,quad was stock,low hours,added a k and n filter and rejetted per the enclosed instructions.Really woke up my performance,took quad to the dunes and am impressed with the sound and performance.My only complaint is the installation instructions weren't clear about the rear mounting bracket.I had to try a couple different combination's before getting it correct.
November 23, 2011
Finish
4 / 5
Performance
5 / 5
No Review Title Entered By User
Last year i got a 04 450r, the pipe was amazing just to see what it would be like i put the stock pipe back on in and the dg pipe gave me a huge amount of torque, very nice pipe for the price!
March 24, 2012
Finish
5 / 5
Performance
5 / 5
GREAT BUY!
Delivery was very quick. Very satisfied with this product. Good sound and power. Instructions was very easy. Installed in about 30 min. Big thumbs up
May 16, 2012
Finish
5 / 5
Performance
5 / 5
best price great product
installed easily sounds great and the gains in power and response where actually noticeable..
09 raptor 700 EFI
August 28, 2010
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 1 answer
Would this be a good one to make the quad more quite than stock?
A shopper on Mar 25, 2017
BEST ANSWER: no

Instructions and Manuals for DG RCM II Muffler - 051-2145