McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Phone

800.979.0122

Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®

Search

Speedway Shorty Race Mufflers, 8 x 3-1/2 Inch

SAME DAY SHIPPING! Order within the next 8 hours 20 minutes and receive same day shipping

Specs
Material Type:
Steel
Overall Length:
8.00
Sold in Quantity:
Each
Finish:
Painted
Inlet Size:
3.50
Overall Diameter:
4.00
Garage Sale:
No
Speedway Shorty Race Mufflers, 8 x 3-1/2 Inch

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

These shorty race mufflers are useful when the rules say you must run a muffler, but do not specify a noise level. All steel construction with no fillers to burn out.

Item Details

8" x 3.5" x 3.5"

Customer Reviews

Rated 5 out of 5 by 4 reviewers.
RATING BREAKDOWN
4 reviews
5 Stars
4
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

mrroboto
Verified Purchaser
Lake Havasu City, AZ, USA
Product Rating

Sweet!

October 09, 2014
Priced right! Perhaps a little loud for the guy wondering about decibel levels? Just right for me! I'm using them on the street through front fender exits. Fast & Loud was my intended goal. I've achieved such thanks in part to these shorty mufflers.
Pros:
  • Sound
  • Quality
  • Price
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

jeffco2
Verified Purchaser
Newaygo, MI 49337, USA
Product Rating

Super light, nice design!

September 03, 2014
These mufflers worked just perfect for my low ground clearance drag car, I was not looking to really quiet it down but the presence of mufflers to conform to the rules. I used 4 and am glad I did, worked out great.
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

kwikamc
Pittsgrove Township, NJ, USA
Product Rating

good and functional

September 04, 2013
I used these on a drag car.nice and compact. doesn't cut much noise, but passes tech when decibles aren't measured.
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

armydadlb
Verified Purchaser
Product Rating

its good

June 30, 2014
works real good and its my 3rd set a+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++and there good to
Pros:
  • all around good
Cons:
  • shipping a little to high
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Page 1 of 1

Product Q&A

4 questions : 7 answers

need to bring noise down while loading at home .any suggestions?

1 answers
eddo
Bullhead City, AZ, USA
February 10, 2015

need to bring noise down while loading at home .any suggestions?

Answers

February 10, 2015
EricM
This is not the muffler for you. This muffler does very little noise reduction. It is intended to look like a muffler where rules state you must run one but no noise level is required to be met. Mufflers 91700609 or 91700935 will quiet down your car but you would certainly want to remove them before racing if mufflers are not required at your track since they will cause a reduction in power.

What type of baffles are inside these mufflers? Drilled holes or like a glasspack?

1 answers
2500HD
December 15, 2014

What type of baffles are inside these mufflers? Drilled holes or like a glasspack?

Answers

December 15, 2014
EricM
This muffler is similar to the design of a glasspack but the ID is not reduced through the center like a typical glasspack muffler.

Will these mufflers slide over the ends of the headers or inside the headers so they can be bolted on?

3 answers
September 23, 2011

Will these mufflers slide over the ends of the headers or inside the headers so they can be bolted on?

Answers

September 04, 2014
jeffco2
If your collector is 3 1/2 inch out side diameter the muffler will slip fit over the collector and you can add tabs to bolt it on.
September 05, 2013
kwikamc
yes, they slide over the end of a 3-1/2 inch header.
September 26, 2011
Jason
These slid over outside of header tube.

how do you no which side goes on the header the long side or shorter side?

2 answers
zac
dodge city kansas
June 06, 2011

how do you no which side goes on the header the long side or shorter side?

Answers

September 04, 2014
jeffco2
They are non directional so which every way fits best, that's the way they are mounted, when you look inside the muffler you will see the baffles are non directional.
June 07, 2011
Jason
It is designed that long side goes on header but you could mount either way
Page 1 of 1

You may also be interested in:

Speedway Auger Style Muffler
(Part #91013984)
                        Auger style muffler fits 3" or 3-1/2" diameter pipe.  11" long. Baffle style. Slips inside.       
                    
Muffler Collector Insert, 3 Inch
(Part #91742530)
                        With its straight-through design, this muffler insert reduces noise without excess back pressure. Lightweight construction with nothing to burn out ensures durability.
                    
Schoenfeld Headers 103535K Shorty Muffler
(Part #917103535K)
                        This shorty muffler is for use where rules say you must run a muffler, but do not specify a noise level. Has a 4" O.D. body.
                    
Speedway Shorty Race Mufflers, 6 x 3-1/2 Inch
(Part #91763535)
                        These shorty race mufflers are useful when the rules say you must run a muffler, but do not specify a noise level. All steel construction with no fillers to burn out.
                    
Speedway Shorty Race Mufflers, 8 x 3 Inch
(Part #91783030)
                        These shorty race mufflers are useful when the rules say you must run a muffler, but do not specify a noise level. All steel construction with no fillers to burn out.
                    
Steel Exhaust Collector Ring, 3-1/2 Inch
(Part #91013371)
                        Mild steel flanges can be welded to exhaust pipes, mufflers or header collectors so your exhaust system can easily be unbolted and removed. Flanges are 1/4" thick and feature the common 3-bolt mount pattern.
                    
Collector Gasket, 3 1/2 Inch Inside Diameter
(Part #5501203)
                        Collector gaskets available in several sizes.