Shopping CartCLOSE
Shop 2020 Riding Gear For Dirt Bike And Street Bike >
Dr. D NS-4 Complete Exhaust
Dr. D NS-4 Complete Exhaust

$384.95 - $912.99

Description See Also: 7 Reviews 12 Questions Fitment Part Numbers
Item #DRD000C

Read More
7 Reviews
4.1 out of 5 stars
5 Star   5 4 Star   0 3 Star   0 2 Star   2 1 Star   0
All Reviews
1 year 1 month ago Medina ny
Did not receive fast cash

Bought this pipe a couple weeks ago. Looks good sounds great. 5 star on the exhaust but motosport 2 stars. I did not receive my fast cash for this exhaust and when I emailed and explained the situation I still didn't receive the 15 dollars of fast cash. Always fast shipping and good service. This is the only out of many orders I've made that I had an issue with.

Lucky charms Verified Purchaser
1 year 5 months ago Washington WA
2015 Yamaha yz250f

Absolutely the best exhaust system for your money. I seen power Gaines through the whole power curve, also comes with a spark arrester insert, fit and finish was excellent. I would definitely buy this exhaust system for any of my other bikes. The motor sport team that I talk to over the phone also was very knowledgeable about the product that I wanted and I left feeling taken care of thanks so much.

Timmay Verified Purchaser
2 years 4 months ago Brighton, CO, USA
Awesome exhaust!

Fit and finish is outstanding and second only to how well this pipe performs. I installed this on my 2007 YZ450F and am extremely happy with the sound, performance and looks of this pipe. Install was a breeze and it looks awesome. Performance is second to none, I would highly recommend this exhaust to anyone looking for increased performance at a great price. You won't be disappointed!

Over 3 years ago pa
2016 yz450fx drd

i put this pipe on my 2016 yz450fx and now touching the throttle is like hitting a nitrous button, love it

cdr289 Verified Purchaser
Over 3 years ago Chicago, IL, USA
Into it

i've been using Dr. D's in every bike that i have and i'm comfortable with it . for me and my friends its Dr. D or nothing .

natef12 Verified Purchaser
Over 4 years ago

Bonem429 Verified Purchaser
Over 5 years ago
Not worth it.

it is causing a lot problems with my jetting even after going to Dr. D's website. Still not able to get it to stop back firing all because I changed to this pipe.

12 Questions
Answered:   11
Not Yet:   1
Q: Any extra tuning need to be done after installing this full system on a 18 kx450f
1 year 2 months ago
Top 10
1 year 2 months ago
A: It is not necessary, however the manufacturer recommends it for the maximum potential from the exhaust.
Q: Looked all over the internet to look for review and sound clips with a full DRD system for a 2018 kx450f but cant find anything how well is this exshaust match with a 18 kx 450
1 year 2 months ago
Top 10
1 year 2 months ago
A: Dr. D may not have done that, have you checked with any other sites, message boards or with Youtube by chance?
Q: I was looking to purchase this full system exhaust for my 2015 honda crf150f and was wondering how tough is the installation of this exhaust is and if I could do it at home or have to take it into a shop.
1 year 4 months ago
Top 10
1 year 4 months ago
A: We always recommend that you take your higher priced ticket items and performance pieces to a certified technician for installation.
Q: I accidentally commented on the slip on before but why does this item not show picture of head pipe ?
1 year 10 months ago
Top 10 Contributor
1 year 10 months ago
A: I have included a link to Dr. D's full exhaust photo.

Q: It says complete exhaust so does it come with head pipe too
2 years ago
Top 500
2 years ago
A: Yes it will include the necessary pieces to a complete a system.
Top 25
2 years ago
A: Yes this exhaust features and comes with stainless steel header, mid pipe and carbon fiber or aluminum muffler.
2 years ago
A: Yes a FULL system comes with the head pipe. While a slip on is only the rear muffler/ sliencer. Which is why it's a cheaper price than the full system.
Q: For a 2006 kx250f will the header pipe have the pdh chamber?
2 years 10 months ago
Q: Will this work on my 2006 ttr230 and is it full exhaust system
Over 3 years ago
Is there a big power change
MotoSport Staff Expert
Over 3 years ago
A: Yes, complete system and fits your 2006 Yamaha TTR230. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct exhaust for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Q: Is the spark arrestor screen removable in the DR.D exhaust system?
Over 3 years ago
MotoSport Staff Expert
Over 3 years ago
A: The All Stainless Steel/Aluminum Dr. D NS-4 systems come with a Spark Arrestor screen.
Q: I'm thinking about buying this system for my 2013 kx250f along with a loudmouth intake system. Would I need to have the ecu remapped?
Over 4 years ago
Expert MotoSport Staff
Over 4 years ago
A: Generally with a full system reprogramming is necessary for optimum performance.
Q: Do I need to buy a jetting kit for this exhaust?
Over 4 years ago
Im thinking to buy this one but not sure if u need a jetting kit or other work before putting it on. I have a 2009 ttr230.
MotoSport Staff Expert
Over 4 years ago
A: Yes generally when installing a complete exhaust system you will need to re-jet. It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
1 - 10 of 12

See all bikes that this part fits...

See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Stainless Steel / Aluminum 7421
Stainless Steel / Aluminum 7404
Stainless Steel / Carbon Fiber 7405
Stainless Steel / Aluminum 7370
Stainless Steel / Aluminum 7374
Stainless Steel / Aluminum 7310
Stainless Steel / Aluminum 7342
Stainless Steel / Aluminum 7316
Stainless Steel / Aluminum 7324
Stainless Steel / Aluminum 7334
Stainless Steel / Aluminum 7301
Stainless Steel / Aluminum 7516
Stainless Steel / Aluminum 7581
Stainless Steel / Aluminum 7429
Stainless Steel / Carbon Fiber 7430
Stainless Steel / Aluminum 7454
Stainless Steel / Carbon Fiber 7455
Stainless Steel / Aluminum 7512
Stainless Steel / Aluminum 7513
Stainless Steel / Aluminum 7521
Stainless Steel / Aluminum 7525
Stainless Steel / Aluminum 7535
Stainless Steel / Aluminum 7537
Stainless Steel / Aluminum 7556
Stainless Steel / Carbon Fiber 7557
Stainless Steel / Aluminum 7571
Stainless Steel / Carbon Fiber 7572
Stainless Steel / Aluminum 7578
Stainless Steel / Aluminum 7587
Stainless Steel / Aluminum 7589
Stainless Steel / Aluminum 7590
Stainless Steel / Aluminum 7594
Stainless Steel / Aluminum 7614
Stainless Steel / Carbon Fiber 7615
Stainless Steel / Carbon Fiber 7317
Stainless Steel / Carbon Fiber 7389
Stainless Steel / Carbon Fiber N/A
Stainless Steel / Carbon Fiber 7343
Stainless Steel / Carbon Fiber 7367
Stainless Steel / Carbon Fiber 7371
Stainless Steel / Carbon Fiber 7375
Stainless Steel / Carbon Fiber 7302
Stainless Steel / Carbon Fiber 7687
Stainless Steel / Carbon Fiber 7637
Stainless Steel / Carbon Fiber 7679
Stainless Steel / Carbon Fiber 7667
Stainless Steel / Carbon Fiber 7661
Stainless Steel / Carbon Fiber 7659
Stainless Steel / Carbon Fiber 7698
Stainless Steel / Aluminum 7619