M4 Exhaust Black GP19 Slip-On - KA9902-GP19

M4 Exhaust Black GP19 Slip-On - KA9902-GP19

$439.00; $439.00
Unit price: per

Vendor: M4 Exhausts

SKU: KA9902-GP19

See Availability Remark below.

We drop ship from M4 Exhaust. Please allow 1-3 days for processing. ETA's currently due to high demands are 4 to 5 weeks for most systems. We will contact you with ETA once we have processed your order

M4 Exhaust Black GP19 Slip-On - KA9902-GP19

$439.00

M4 Exhaust Black GP19 Slip-On - KA9902-GP19

$439.00

Description
Fitment Table
Reviews

Description

Saves 10.9 lbs Over Stock
Removes Exhaust Valve
Eliminates CAT
Comes with M18 O2 Bung
Stock 95 dB @7,000 RPM
M4 112 dB @7,000 RPM
Stock Max HP 170.4 @11,800 RPM
M4 Max HP 172.7 @11,800 RPM
Comes with Q1 Quiet Insert
Stage 2 Quiet Insert Q3 Sold Separate

Fitment Table

Reviews

Product Specs

SKU:	KA9902-GP19

Let customers speak for us

from 285 reviews

little slow on shipping but i was ordering parts for a 30 yr old bike

little slow on shipping but i was ordering parts for a 30 yr old bike. All in all good transaction informed whole way thru with times

Bryan Goodman

06/15/2026

HHR Performance

Shopping experience

I will definitely be contacting HHR for more products in the near future.
Nigel Gale

NIGEL GALE

06/13/2026

Qnium products

Looks like incredible engineered products, both the thumb brake & the rear master cylinder. On the master cylinder, be aware QNIUM use 6mm bolts where as the stock Triumph 675 bolts are 8mm. Not a big deal, just be aware.
Nigel Gale

Qnium Rear Brake Master Cylinder Top Side 12mm piston w/ 50mm mount + Push Rod

Great customer service

I am really glad you have employees like MARK. He was incredibly patient. There were some bumps along the way & he made sure to communicate what was going on & kept me in the loop has to the time frame for delivery etc. Great customer service.

Mark was exactly right

Mark was exactly right, the quality of this product is remarkable. Exactly as promised!!!

Qnium Radial Thumb Brake Master Cylinder 12mm piston

Such a great set of tank grips for this bike

Such a great set of tank grips for this bike.
Works perfectly and was suprised on how easy the installation was.

Joseph Garica

06/10/2026

TechSpec KTM Duke 390 (2024 - Current) Snake Skin Tank Grips

Best place to buy parts

Best place to buy parts, great communication,

Derick

06/04/2026

Great communication

Fast shipping, great communication

Alpha Racing Cylinder head gasket 0,97 mm BMW S1000RR 2019- and M1000RR 2021-

A Team You Can Trust with Complete Confidence

If I could give Mark and his team a higher rating, I absolutely would. They are, without a doubt, the most knowledgeable and client-focused sales team I have ever worked with. They genuinely care about the people who place their trust in them and consistently go above and beyond to ensure all of my questions are answered. Their professionalism, expertise, and commitment to making sure I feel confident in every purchase set them apart from everyone else.

Haleem Ballou

06/02/2026