KFX450R

Let customers speak for us

from 852 reviews

Pure craftsmanship and quality

I know there was a lead time on this M4 exhaust but bill’s got it to me before it was supposed to be here can’t say enough about there company thank you so much. The craftsmanship and quality are spot on. I will always buy from them.

David Reese

03/20/2026

M4 Exhaust GP19 Black Slip On 2009 - 2025 2026 ZX6R zx6 KA6922-GP19

Fast service

Fast service.

Anonymous

03/19/2026

72005VAN Arrow Veloce Racing Slip-on Exhaust for Sidebags for Triumph Tiger 850 20-24 /900 20-23

NOTHING SHORT OF AMAZING

NOTHING SHORT OF AMAZING.
Excellent quality of exhaust, easy to install, and great looking. Sound is AWESOME, definitely gives the BMW K 1600 B a different appearance.

Quick turnaround and fast shipping by Bill’s Team!!!
Thank you.

Marco Boos

03/17/2026

BMW K 1600 B GRAND AMERICA 4" FREEDOM SLIP-ONS 2017-PRESENT

I just love it

I just love it. I only wish it was available when I bought my bike in 2020.

Fernando Martinez

03/13/2026

Vandemon Triumph Rocket 3R & GT 2500cc 2019-2025 Titanium Exhaust Manifold TRIUMROCKET3SSHEADR VA-11

Don’t order anyplace else

Let start with placing and order it was so easy and painless had my order within couple weeks. Now the actual exhaust my bike Luna sounds great she feel like a whole different bike. Sounds amazing for my future bikes bills is the only place I will order from thank you bills

Rafael Landeros

03/13/2026

AKRAPOVIC Exhaust System - Racing Line - Titanium YZF-R7 2022-2024 and 2025 S-Y7R12-APT 1810-3053

just what i needed for my 1999 yamaha YZF R7ow02/R1 toy

just what i needed for my 1999 yamaha YZF R7ow02/R1 toy...

MARK HILL

03/12/2026

Arrow Yamaha Yzf R1 07-08 Stainless Steel Collectors 71364mi

Samantha great customer service

Haven’t installed or checked that is complete, but looks good and what I want to thank the amazing customer service, Samantha was amazing helping me decide and get my order delivered with no problem

Mariano Rojas Torres

03/12/2026

IN STOCK 71768mi Arrow Racing Titanium Collectors Header For Original And Arrow Silencer S1000RR 2020-2025 /M1000RR 20-24 71768mi

Would buy again

Looks great, lighter weight and better quality of sound, particularly once you remove the baffle.

Jude Walsh

03/09/2026

71914AKN Arrow 71914AKN Indy Race Aluminum Dark Slip-on Exhaust for Kawasaki Ninja 1000SX 2020-2025

Couldn't be happier

I am a very happy customer, every time I have bought something from Bill’s Exhaust the office have been super communicative in setting my expectations.
You will always know where your item and when to expect it.

Anonymous

03/09/2026

Arrow 71751MI Racing Exhaust Collector for BMW S1000XR 20-24 71751MI

Arrow's craftsmanship is top notch

Arrow's craftsmanship is top notch, and Bill's Exhausts gave me a great deal and worked with me when there was a little hiccup with the order. A special shoutout to Samantha--she's very helpful. A+

Brandon F

03/06/2026

APRILIA TUAREG 660 EURO 5+ 2025 STAINLESS STEEL COLLECTORS - 72202pd

Absolutely love this exhaust

Absolutely love this exhaust, it came with everything needed, and sounds amazing. Installed on a 2025 ZX6R KRT edition.

Darlene Barthel

03/02/2026

Arrow Pro-Race Slip-on i ZX-6R 636 2009-2025 2026 Exhaust Titanium for Kawasaki ZX-6R 636 2009-2025 2026 71898PR

Looks good and sounds good

Looks good went on fine all the hardware was there. It was very easy to install.

Michael Lacy

03/02/2026

LEOVINCE LV Corsa Muffler - Black Edition KAWASAKI NINJA 400/500 2018 - 2025 2026 15400BU 1811-4303

This exhaust is top notch!

This exhaust is top notch! Quality is better then any exhaust I've had in the past and would highly recommend it! The sound on the xsr 700 is perfect! Loud but not obnoxious! I've had a bunch of different exhausts for the cp2 motor akra, M4, two bros and this sounds better then all of them by far! There aren't too many exhaust sound clips for this on the cp2 so I was taking a chance and I can say I am not disappointed in any way!!

David Williams

03/02/2026