Yoshimura RS-4 Stainless/Aluminum Slip-On

Customer Reviews for Yoshimura RS-4 Stainless/Aluminum Slip-On

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Yoshimura RS-4 Stainless/Aluminum Slip-On Reviews

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sweet!

shane in UT

Comments On Apr 11, 2013:noticeable power increase throughout the Power Range. looks and sounds killer as well. Fits nice and snug, Quick Install.

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Looks awesome

Clinton in CO

Comments On Mar 30, 2013:Great looks sounds good without being too loud and also has a spark arrestor.

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Slip on muffler

James in TN – Machine this part was bought for: 2011 HONDA CRF450R

Comments On Nov 23, 2012:Ran it with the spark arrestor removed and the bike ran fine, very noticble power increase down low. I went ahead and got my ecu re mapped and even better

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Great Product

Carl in TX

Comments On Nov 14, 2012:I really like this pipe. It is quiet and is very nice quality.

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What was expected!!!!

THOMAS in NC

Comments On Sep 28, 2012:If you are looking more power with minimum spending and doing internal work, this is for you. Put this on my 2012 crf450r. Slip-on gives an immediate increase in power. No need to remap, works out of the box. Couple this with a Power-Flow filter from Twin Air and hold on. Increases pull into mid/upper 9,000 rpm range. When the new power wears off, a re-map and pulling the spark-arrestor will do the trick. Now need to stock up on some fresh tires to put the SCARY back in it.

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Factory

DEAN in CA

Comments On May 02, 2012:How can you go wrong with a Yosh pipe or muffler.. Good price and points and 10 % off now and then.. No other business around is like Rocky Mt. ATV*MC. Nor their parts.

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yosh slip on muffler

ERIC in CA

Comments On Oct 16, 2011:Yosh makes some good stuff! I'm really impressed. This muffler is really well made. The hanger bracket is SOLID and welded to the canister, not just cheaply riveted on like FMF does. Also, the connection to the head pipe is secured with a high quality clamp, not just glued on like FMF. The only surprise was the Yosh instructions suggest remapping the bike. The RM description didn't tell me this. This Yosh muffler is 9oz heavier than stock, but then it also has the spark arrestor insert.

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Good looking, not so expensive S/A slip on

JONATHON in CA

Comments On Aug 16, 2011:Seems to be durable, but is heavier than the stock 09 CRF450R slip-on. Not much quieter than stock either, but seems to flow just as much air w/spark arrestor as the stock MX silencer. Arguably the best-looking slip-on for the bike.

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