empty
Shopping CartCLOSE
  • Your cart is empty.
FREE 2-DAY SHIPPING ON ORDERS OVER $49
Dr. D NS-4 Slip-On Exhaust
Dr. D NS-4 Slip-On Exhaust

$ 395.95 - $ 824.99

Description See Also: 5 Reviews 11 Questions Fitment Part Numbers
Item #DRD000E

Read More
5 Reviews
5 out of 5 stars
5 Star   5 4 Star   0 3 Star   0 2 Star   0 1 Star   0
Write a Review

Write your review and you'll automatically be entered in our monthly drawing. Include an image or video to DOUBLE your chances to win!

Write Your Review Write a review to win $500
All Reviews
Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5

Verified Purchaser
Manning, IA 51455, USA
Durability 3/5 Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 5/5
Good product

Put this on my 2016 yz250f. Woke the bottom end up and mid range on the bike. When the spark arrestor was installed lost some of the bottom end but still great in the mid range. Install was a snap. Havent had it long enough to say about the durability but so far so good

Apple Valley, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Sounds really good!

Install was really easy took about 15 minutes. Sound is exactly what I was looking for and you can definitely feel power gains over the stock set up. I will run Dr D exhaust on all of my bikes from now on.

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great investment

Throttle response better much lighter than factory,easy to install.

Top 1000 Contributor Verified Purchaser
Pearblossom, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Excellent exhaust

Bolted right on to 2013 kx250f. Sounds great. looks great and the increase in horsepower is always good

11 Questions
Answered:   9
Not Yet:   2
Tyus
Q: Why can't we see pictures of header since its full system
1 year ago
David
Top 10 Contributor
1 year ago
A: This is item is only the slip on. No headers included.
ronnie
Q: What is the part manufacturer number so a shop can look it up. 2017 yamaha yz450f
1 year 11 months ago
ronnie
Q: What is the part manufacturer number so a shop can look it up.
1 year 11 months ago
xsvmachine95
Q: Can I buy the Dr. D Slip-On and buy the header later?
2 years 3 months ago
MotoSportExpert
MotoSport Staff Expert
2 years 3 months ago
A: No sorry, Dr D does not offer the header separately.
Zeke21
Q: How much does the aluminum drd slip on pipe weigh for a 2015 yz250fx?
2 years 11 months ago
MotoSportExpert
Expert MotoSport Staff
2 years 11 months ago
A: Approximate weight would be 6.5lbs.
eddie
Q: Is this exhaust louder or quieter then my stock one on a 2008 KTM 450XC-F
Over 3 years ago
MotoSportExpert
MotoSport Staff Expert
Over 3 years ago
A: The Dr. D NS-4 Slip-On Exhaust would likley be louder than the stock muffler on your 2008 KTM 450XC-F.
Drew
Q: Will it fit my 2015 yfz 450 with a stock header
Over 3 years ago
MotoSportExpert
Expert MotoSport Staff
Over 3 years ago
A: The Dr. D NS-4 Slip-On Exhaust will work with the stock head pipe. However it is not available for the 2015 YFZ450 at this time.
justin
Q: I have a 2014 kx 450f if i buy this slip on and use it with my stock header could i later buy a dr. D header and not have to change the slip on?
Over 4 years ago
MotoSportGrantK
MotoSport Staff
Over 4 years ago
A: Yes, according to Dr. D if you purchase the NS-4 Slip-On for your 2014 Kawasaki KX450F you can purchase the header later and not have a fitment issue. Keep in mind that you can't do this with every bike, but for your 2014 KX450F you can.
BlakeSteak317
Q: This says it fits my 2014 crf250, but it doesnt say that its duals. will this convert my bike to single exhaust or does it come with two silencers?
Over 4 years ago
MotoSportRyanT
MotoSport Staff Expert
Over 4 years ago
A: This would be a single slip-on muffler for your bike. All the Dr. D Exhaust systems made for the 2014 Honda CRF450R would convert the bike to a single muffler instead of dual mufflers.
crfdude25
Q: Is the spark arrestor that comes with the exhaust US Forest approved?
Over 5 years ago
MotoSportExpert
MotoSport Staff
Over 5 years ago
A: Yes, the included spark arrestor is USFS approved.
calyman
Top 1000 Contributor
Over 5 years ago
A: Yes... the spark arrestor is approved as we were allowed to ride trails with it. It can separately and included an allen wrench to install it
1 - 10 of 11
Fitment

See all bikes that this part fits...

See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Stainless Steel With Aluminum Can 7542
Stainless Steel With Aluminum Can 7618
Stainless Steel With Aluminum Can 7620
Stainless Steel With Aluminum Can 7621
Stainless Steel With Aluminum Can 7634
Stainless Steel With Carbon Fiber Can 7635
Stainless Steel 7639
Stainless Steel With Aluminum Can 7656
Stainless Steel With Carbon Fiber Can 7657
Stainless Steel With Aluminum Can 7664
Stainless Steel With Carbon Fiber Can 7665
Stainless Steel With Aluminum Can 7676
Stainless Steel With Carbon Fiber Can 7678
Stainless Steel With Aluminum Can 7695
Stainless Steel With Carbon Fiber Can 7696
Stainless Steel With Aluminum Can 7703
Stainless Steel With Carbon Fiber Can 7707
Stainless Steel With Aluminum Can 7320
Stainless Steel With Aluminum Can 7400
Stainless Steel With Aluminum Can 7392
Stainless Steel With Aluminum Can 7328
Stainless Steel With Aluminum Can 7338
Stainless Steel With Aluminum Can 7346
Stainless Steel With Aluminum Can 7382
Stainless Steel With Aluminum Can 7385
Stainless Steel With Aluminum Can 7354
Stainless Steel With Aluminum Can 7362
Stainless Steel With Aluminum Can 7412
Stainless Steel With Aluminum Can 7305
Stainless Steel With Aluminum Can 7313
Stainless Steel With Carbon Fiber Can 7321
Stainless Steel With Carbon Fiber Can 7401
Stainless Steel With Carbon Fiber Can 7393
Stainless Steel With Carbon Fiber Can 7329
Stainless Steel With Carbon Fiber Can 7339
Stainless Steel With Carbon Fiber Can 7347
Stainless Steel With Carbon Fiber Can 7383
Stainless Steel With Carbon Fiber Can 7387
Stainless Steel With Carbon Fiber Can 7355
Stainless Steel With Carbon Fiber Can 7363
Stainless Steel With Carbon Fiber Can 7306
Stainless Steel With Carbon Fiber Can 7314
Stainless Steel With Aluminum Can 7511
Stainless Steel With Aluminum Can 7515
Stainless Steel With Aluminum Can 7517
Stainless Steel With Aluminum Can 7526
Stainless Steel With Aluminum Can 7552
Stainless Steel With Carbon Fiber Can 7553
Stainless Steel With Aluminum Can 7567
Stainless Steel With Carbon Fiber Can 7568
Stainless Steel With Aluminum Can 7610
Stainless Steel With Carbon Fiber 7611