Made in the USA
Read ( 80 ) Reviews

Python 2-1/2″ Slash-Cut Slip-On Muffler

J&P Cycles Part Number: 450-527

Manufacturer Part Number: 41511


Checking availability...

– Order in the next to ship today
  • Free Ground Shipping

Description for Python 2-1/2″ Slash-Cut Slip-On Muffler

• Use the same baffle as the Python3 full system

• Baffles are non-removable

• Features an embossed Python3 logo on each muffler

• Comes complete with all necessary mounting brackets and instructions

Product Specs

Product Specs for Python 2-1/2″ Slash-Cut Slip-On Muffler

End Cap Or Tip Style:
Slash Cut
Head Pipe Diameter:
Heat Shield:
Not Included
Manufacturer Part Number:
Muffler Color:
Muffler Diameter:
Muffler Finish:
Muffler Material:
Stainless Steel
Muffler Style:
Sold in Units:
Warehouse Part Number:
Fitment Questions?

With over 750 years of experience combined, our tech staff has the answers!

Compatible Models

Harley-Davidson® Models

  • Softail Blackline FXS : 2011–2013
  • Softail Cross Bones FLSTSB : 2008–2011
  • Softail Deluxe FLSTN : 2007–2017
  • Softail Slim FLS : 2012–2016
  • Softail Slim S FLSS : 2016–2017
Customer Reviews

Customer Reviews for Python 2-1/2″ Slash-Cut Slip-On Muffler

Overall Rating

5 out of 5 stars (based on 80 reviews)

5 stars (71)

4 stars (8)

3 stars (1)

2 stars (0)

1 star (0)

0 stars (0)


I just install these pipes WOW what a difference... love them, awesome sound just what I was looking for the price isn't too bad. Easy to install once I was able to take off stock mufflers (used WD-40) too easy. Now my Harley Sportster 1200 Custom sounds like a true Harley and not like a Honda. Highly recommend these pipes. (might have to remap) only thing I wish I didn't have to do. Guess it depends on the bike you have.


Put these on a 15 H-D Superlow 883L. Easy installation, great sound, and no tuning required. The sound quality is outstanding. People will sure hear me coming now. Thanks J & P for another product that can't be beat.


great fit, great sound on my 2015 72 sportster. Turns it from a sewing machine back into a Harley davison like it should be


5 Star


Just installed these today. Easy to follow instructions. Only took about 45 mins. Left the heat shields off. Look bad and sound loud AF. highly recommend !


These slip-on mufflers are the best. The deep fierce tone they produce on my 883 sounds phenomenal. They also look much better than the stock mufflers. Python 3 is embedded on them so your friends won't have to ask you what kind of pipes they are. They are easy to install and remove. They utilize your present head pipes and heat shield. This is the best bang for your buck!!!!!!!!!!! Way to go Python!


Python slip-ons were bought for my son-in-laws first Harley. Loud pipes save lives. He put them on by himself with minimal coaching from me. He is a good kid, but mechanically, it is not him. Perform great. Usability-wise, if he can put them on right the first time, anyone can. Great job once again guys. If you could have seen his face when he fired her up! Thanks.


In less than 30 minutes I had the old pipes off the the Pythons on. Looks and (especially) sounds GREAT! I would recommend them to anyone who wants that big V-Twin sound on a Sportster.


Installed these Python3 slip-ons on my wife's '06 Sportster 1200C. Installation was a breeze. They look great but the most notable difference was the sound compared to the "way-too-quiet" stock muffs. They sound awesome. Deep rumble but not too loud and obnoxious. Took our first ride together last evening....she's a happy camper!!! I could actually hear her behind me over my loud pipes which I couldn't do before. Rating would probably be a 5 but it's too soon to judge how well the chrome holds up. I highly recommend these muffs for anyone who likes the staggered pipe look and doesn't want to pay twice the price for the same result(making it sound like a Harley!). Only regret: They're not available for my 05 Lowrider :(


One word "wow"---what a difference from the stock mufflers. I installed these on my 2006 xl883 sportster. Low deep rumble when bike is idling. But not way too loud when riding. 4-wheelers definitely know you're there next to them. Everyone that has heard them wants Python now for their bikes. I bought these without hearing them, but trusted the reviews on this website. Pick these up if you want that big harley V-Twin sound on a Sportster.

Important Product Notes

Note: Please see U.S. EPA and your respective state and local regulations to confirm noise and emission compliance.

Important Exhaust Notes:

• Note: With any new exhaust, we recommend changes to carburetor jetting or use of an aftermarket fuel injection control module.

• There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Blueing is caused by tuning characteristics, cam timing, carburetor jetting, overheating, etc. and is not caused by defective manufacturing. No refunds on exhaust pipes once motorcycle is started unless there’s a manufacturer’s defect.

• Flanges and retaining rings are not included with most aftermarket exhaust for 1984-2013 Evolution and Twin Cam models. Re-use your existing hardware, or purchase replacement hardware.

Shipping Note

Additional oversized shipping charges will be applied for expedited shipments within the contiguous U.S. Shipping charges outside the contiguous U.S. are calculated by weight and dimension during checkout. Due to state regulations we cannot ship this item to the state of California.

Pickup in our Retail Stores

Get Help From Our Industry Experts

  • Monday-Friday: 7 a.m. - 9 p.m. CST
  • Saturday-Sunday: 8 a.m. - 6 p.m. CST
  • Thanksgiving: Closed
  • Christmas Eve: 7a-5p CST
  • Christmas: Closed
  • Help / FAQs