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Chrome 4-1/2 in. Mk45 Slip-on Mufflers w/Chrome Machined Thruster End Caps - 550-0665

  • Part #:
    4409392
  • Mfg Part #:
    550-0665
  • OEM/Ref#:
1 / 1

Chrome 4-1/2 in. Mk45 Slip-on Mufflers w/Chrome Machined Thruster End Caps - 550-0665

  • Part #:
    4409392
  • Mfg Part #:
    550-0665
  • OEM/Ref#:
MSRP: $699.95

Price: $629.96 10% off!
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S&S Cycle Chrome 4-1/2 in. Mk45 Slip-on Mufflers w/Chrome Machined Thruster End Caps - 550-0665
  • The result of decades of riding and racing, these mufflers create a deep, performance tone
  • Improved horsepower created by using both a stainless steel perforated core removable baffle with RaceTEX cartridge packing
  • Fitted with billet end caps
  • Easy installation
  • Sold in pairs
  • Made in the U.S.A.


Included Items:

(2) Chrome steel slip on mufflers W/removeable chrome end caps and baffles

(2) Exhaust band clamps (AccuSeal)

(4) 5/16"-18 x 1/2" Hex head bolts

(4) 5/16" Split lock washers

Instructions

Specifications
Part #: 4409392
Mfg #: 550-0665
Color - Primary Chrome
Style Straight-Cut Tip
Type Slip-On/Muffler
Units Pair
Weight 28.90 lbs
Alternate/OEM Part Number(s):
18011074
Resources & Manuals
Fitment for S&S Cycle Chrome 4-1/2 in. Mk45 Slip-on Mufflers w/Chrome Machined Thruster End Caps - 550-0665

Part 4409392 fits the following machines

Harley-Davidson
  • Electra Glide Police - FLHTP 2017-2018
  • Electra Glide Standard - FLHT 2019-2020
  • Electra Glide Ultra Classic - FLHTCU 2017-2019
  • Electra Glide Ultra Limited - FLHTK 2017-2020
  • Electra Glide Ultra Limited CVO/SE - FLHTKSE 2017-2020
  • Electra Glide Ultra Limited Low - FLHTKL 2017-2019
  • Road Glide - FLTRX 2017-2020
  • Road Glide CVO/SE - FLTRXSE 2018-2019
  • Road Glide Limited - FLTRK 2020
  • Road Glide Special - FLTRXS 2017-2020
  • Road Glide Ultra - FLTRU 2017-2019
  • Road King - FLHR 2017-2020
  • Road King Special - FLHRXS 2017-2020
  • Street Glide - FLHX 2017-2020
  • Street Glide CVO/SE - FLHXSE 2017-2020
  • Street Glide Special - FLHXS 2017-2020
Reviews & Questions
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Browse 2 questions Browse 2 questions and 2 answers
do the end caps have fluted ends?
Donald M on Apr 25, 2019
BEST ANSWER: Machined end caps
Do these include the removable dB reducers?
A shopper on Sep 15, 2018
BEST ANSWER: Improved horsepower created by using both a stainless steel perforated core removable baffle with RaceTEX cartridge packing
5.0 / 5.0
1 Review
5 Stars
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1 Star
1
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Finish
5.0 / 5
Fit
5.0 / 5
Performance
5.0 / 5
Styling
5.0 / 5
Value
5.0 / 5
Loudness
Very Quiet
Average
Very Loud
Would you recommend this product?
Yes (1)
Finish
5 / 5
Fit
5 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
5 / 5
Styling
5 / 5
Value
5 / 5
Would you recommend this product?
Yes
Great purchase
I’m loving this purchase a lot! It sounds great and I can feel the increase in performance. I’d recommend this to anyone
October 14, 2017