KX450F 16-18

FMF Factory 4.1 RCT Muffler - Aluminum KX450F 2016-2018 042330 1821-1726

Sale

FMF Factory 4.1 RCT Muffler - Aluminum KX450F 2016-2018 042330 1821-1726

Regular price $528.00 USD

Regular price ~~$599.99 USD~~ Sale price $528.00 USD
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FMF PowerCore 4 HEX Muffler KX450F 2016-2018 042327 1821-1723

Sale

FMF PowerCore 4 HEX Muffler KX450F 2016-2018 042327 1821-1723

Regular price $352.00 USD

Regular price ~~$399.99 USD~~ Sale price $352.00 USD
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FMF Q4 HEX Muffler KX450F 2016-18 042328 1821-1724

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FMF Q4 HEX Muffler KX450F 2016-18 042328 1821-1724

Regular price $396.00 USD

Regular price ~~$449.99 USD~~ Sale price $396.00 USD
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FMF MegaBomb Header - Titanium KX450F 2016-2018 042339 1822-0444

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FMF MegaBomb Header - Titanium KX450F 2016-2018 042339 1822-0444

Regular price $396.00 USD

Regular price ~~$449.99 USD~~ Sale price $396.00 USD
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FMF MegaBomb Header - Stainless Steel KX450F 2016-2018 042338 1822-0445

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FMF MegaBomb Header - Stainless Steel KX450F 2016-2018 042338 1822-0445

Regular price $308.00 USD

Regular price ~~$349.99 USD~~ Sale price $308.00 USD
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FMF PowerBomb Header KX450F 2012-2015 042274 1822-0360

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FMF PowerBomb Header KX450F 2012-2015 042274 1822-0360

Regular price $220.00 USD

Regular price ~~$249.99 USD~~ Sale price $220.00 USD
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PRO CIRCUIT T-6 Muffler KX450F 2016- 2018 0121645A

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PRO CIRCUIT T-6 Muffler KX450F 2016- 2018 0121645A

Regular price $520.00 USD

Regular price ~~$590.95 USD~~ Sale price $520.00 USD
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PRO CIRCUIT Ti-6 Exhaust KX450F 2017-2018 0321745F

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PRO CIRCUIT Ti-6 Exhaust KX450F 2017-2018 0321745F

Regular price $1,118.00 USD

Regular price ~~$1,269.95 USD~~ Sale price $1,118.00 USD
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PRO CIRCUIT Ti-6 Pro Exhaust KX450F 2017-2018 0321745FP

Sale

PRO CIRCUIT Ti-6 Pro Exhaust KX450F 2017-2018 0321745FP

Regular price $1,118.00 USD

Regular price ~~$1,269.95 USD~~ Sale price $1,118.00 USD
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Sale
FMF Exhaust Replacement Decal - Powercore 4 014846 4320-2204

FMF Exhaust Replacement Decal - Powercore 4 014846 4320-2204

Regular price $17.00 USD

Regular price ~~$16.99 USD~~ Sale price $17.00 USD
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DYNOJET Power Commander-6 - KX 450 F /X 2016-2021 PC6-17069

Sale

DYNOJET Power Commander-6 - KX 450 F /X 2016-2021 PC6-17069

Regular price $418.99 USD

Regular price ~~$465.78 USD~~ Sale price $418.99 USD
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Sale
ATHENA Piston Kit KX 450 F 2009-2018 S4F100000190

ATHENA Piston Kit KX 450 F 2009-2018 S4F100000190

Regular price $257.95 USD

Regular price ~~$257.95 USD~~ Sale price $257.95 USD
Unit price per
RENTHAL Grips Tapered Green G193

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RENTHAL Grips Tapered Green G193

Regular price $18.40 USD

Regular price ~~$20.95 USD~~ Sale price $18.40 USD
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PRO CIRCUIT Axle Blocks - KX/RM-Z - Brown KAB03

PRO CIRCUIT Axle Blocks - KX/RM-Z - Brown KAB03

Regular price $60.00 USD

Regular price ~~$59.95 USD~~ Sale price $60.00 USD
Unit price per
Mototote mtx m3 motorcycle carrier

Mototote mtx m3 motorcycle carrier

Regular price $599.00 USD

Regular price ~~$599.00 USD~~ Sale price $599.00 USD
Unit price per
PRO CIRCUIT Water Pump Cover with Impeller - Kawasaki KX450F 2016-2018 WPK16450

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PRO CIRCUIT Water Pump Cover with Impeller - Kawasaki KX450F 2016-2018 WPK16450

Regular price $176.00 USD

Regular price ~~$199.95 USD~~ Sale price $176.00 USD
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PRO CIRCUIT Shift Lever - KX450F KSL 16450

PRO CIRCUIT Shift Lever - KX450F KSL 16450

Regular price $100.00 USD

Regular price ~~$99.95 USD~~ Sale price $100.00 USD
Unit price per
PRO CIRCUIT Clutch Springs CSK19450-CS

PRO CIRCUIT Clutch Springs CSK19450-CS

Regular price $90.00 USD

Regular price ~~$90.00 USD~~ Sale price $90.00 USD
Unit price per
PRO CIRCUIT Axle Blocks - KX250F/KX450F - Unfinished KAB17

PRO CIRCUIT Axle Blocks - KX250F/KX450F - Unfinished KAB17

Regular price $63.00 USD

Regular price ~~$62.95 USD~~ Sale price $63.00 USD
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PRO CIRCUIT Throttle Tube - Aluminum TB-04

PRO CIRCUIT Throttle Tube - Aluminum TB-04

Regular price $75.00 USD

Regular price ~~$75.00 USD~~ Sale price $75.00 USD
Unit price per
PRO CIRCUIT Oil Filter Cover - KX450F PC4009-0015

PRO CIRCUIT Oil Filter Cover - KX450F PC4009-0015

Regular price $40.00 USD

Regular price ~~$39.95 USD~~ Sale price $40.00 USD
Unit price per
PRO CIRCUIT Brake Lever - Black PCBL03-01-017

PRO CIRCUIT Brake Lever - Black PCBL03-01-017

Regular price $25.00 USD

Regular price ~~$24.95 USD~~ Sale price $25.00 USD
Unit price per
PRO CIRCUIT Clutch Lever - Black Kawasaki/Suzuki/Yamaha PCCL04-01-052

PRO CIRCUIT Clutch Lever - Black Kawasaki/Suzuki/Yamaha PCCL04-01-052

Regular price $20.00 USD

Regular price ~~$19.95 USD~~ Sale price $20.00 USD
Unit price per
BARNETT Clutch Kit N/F 19-20 KX450F 303-45-10020

BARNETT Clutch Kit N/F 19-20 KX450F 303-45-10020

Regular price $239.00 USD

Regular price ~~$239.00 USD~~ Sale price $239.00 USD
Unit price per
BARNETT Clutch Friction Plate 301-35-10012

Sale

BARNETT Clutch Friction Plate 301-35-10012

Regular price $16.88 USD

Regular price ~~$18.78 USD~~ Sale price $16.88 USD
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BARNETT Drive Plate 401-45-063006

Sale

BARNETT Drive Plate 401-45-063006

Regular price $8.37 USD

Regular price ~~$8.95 USD~~ Sale price $8.37 USD
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Sale
ATHENA Cylinder Kit P400250100022

ATHENA Cylinder Kit P400250100022

Regular price $647.95 USD

Regular price ~~$647.95 USD~~ Sale price $647.95 USD
Unit price per
ATHENA Race Gasket Kit P400250900066

ATHENA Race Gasket Kit P400250900066

Regular price $282.95 USD

Regular price ~~$282.95 USD~~ Sale price $282.95 USD
Unit price per
ATHENA Connecting Rod Kit P40321035

ATHENA Connecting Rod Kit P40321035

Regular price $152.95 USD

Regular price ~~$152.95 USD~~ Sale price $152.95 USD
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ATHENA Connecting Rod Kit P40321036

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ATHENA Connecting Rod Kit P40321036

Regular price $152.95 USD

Regular price ~~$152.95 USD~~ Sale price $152.95 USD
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ATHENA Water Pump Gasket Kit - Kawasaki P400250475012

ATHENA Water Pump Gasket Kit - Kawasaki P400250475012

Regular price $64.95 USD

Regular price ~~$64.95 USD~~ Sale price $64.95 USD
Unit price per
ATHENA Piston Ring Set S41316178

ATHENA Piston Ring Set S41316178

Regular price $57.95 USD

Regular price ~~$57.95 USD~~ Sale price $57.95 USD
Unit price per
ATHENA Race Gasket Kit R2506-066

ATHENA Race Gasket Kit R2506-066

Regular price $50.95 USD

Regular price ~~$50.95 USD~~ Sale price $50.95 USD
Unit price per
ATHENA Frame Pads - KX450F - Green M7343V

ATHENA Frame Pads - KX450F - Green M7343V

Regular price $34.99 USD

Regular price ~~$34.99 USD~~ Sale price $34.99 USD
Unit price per
Hot Rods Connecting Rod 8684

Hot Rods Connecting Rod 8684

Regular price $186.95 USD

Regular price ~~$182.95 USD~~ Sale price $186.95 USD
Unit price per
Hot Rods Transmission Bearings Kit TBK0021

Hot Rods Transmission Bearings Kit TBK0021

Regular price $131.95 USD

Regular price ~~$128.95 USD~~ Sale price $131.95 USD
Unit price per

Let customers speak for us

from 26 reviews

Two Brothers 790 (2019-2021) / 890 (2021-2024 S1R Slip-On System 005-5230409-S1B

Two Brothers Slip on KTM 890

2Brothers has yet to let me down. Great Slip on set up, deepens the sound without making it obnoxious. Easy install, took about an hour with wrapping the mid pipe. I recommend wrapping the mid, it is much hotter than stock without the wrap. Thanks Bill! -Jon

Jon E.

Two Brothers 790 (2019-2021) / 890 (2021-2024 S1R Slip-On System 005-5230409-S1B

11/12/2024

VANCE & HINES Hi-Output Slip-On Muffler 48427

Nice looking muffler

Not difficult to install. Most likely will require to replace the muffler gasket. Matches well the look of the bike. Sounds well at low to mid range, a little noisy at high RPM.

Dov Greenberg

VANCE & HINES Hi-Output Slip-On Muffler 48427

10/26/2024

FMF Powercore 4 Hex Slip-On Muffler KX 450 2024 042401 1821-2091

2024 KX 450

Great sound with mild performance increase. Quality design. Price was fair. Bolted on with no issues.

Do not Like the new sticker logo instead of the traditional FMF stamping.

Mike Jones

FMF Powercore 4 Hex Slip-On Muffler KX 450 2024 042401 1821-2091

10/21/2024

V&H VO2 Naked Air Cleaner

Exactly as described. Once again, Bill and team have provided a quality, well priced item. They are quick to contact with any possible wrong fit, possible issues, and always have been spot on with solutions or suggestions. Will use Bill's Performance for all my motorcycle needs. Highly recommend this company. (2010 HD Heritage Softail Classic)

Myles Decker

VANCE & HINES VO2 Air Cleaner 71305

08/21/2024

FMF MegaBomb Header Titanium YZ450F 2023 -2024 044476 1822-0540

John Melvin Somera

07/01/2024

VANCE & HINES Fuelpak 4 Tuning Module - Dyna/Softail/Sportster/Touring/Trike 66047

V&H FP4 Fuelpak

I want to highly recommend Bill's Performance for all of your part needs. The entire experience was great. I was having an issue with the FP4 not connecting to my bike. I contacted Bill directly on the phone on Saturday and we were able to resolve the issue with no problems. His response time, patience with me, and customer service are top notch. I will purchase from him again. 10/10 rating. You will not be disappointed. Thank you Bill!!

VANCE & HINES Fuelpak 4 Tuning Module - Dyna/Softail/Sportster/Touring/Trike 66047

06/25/2024

BELT DRIVES LTD. Rear Drive Belt - 140-Tooth - 24mm PCC-140-1

Awesome customer service

Ordered a drive belt contacted me next day it was sold out and filled my order with better belt and shipped fast

Kevin Weis

BELT DRIVES LTD. Rear Drive Belt - 140-Tooth - 24mm PCC-140-1

06/19/2024

Awesome seller and great communicator

This is my second exhaust from bill in 6 months for two different bikes he had exceptional customer service and always staying on top of time frame and his prices are better then anyone out there . Overall what makes Bill stand above the rest is his customer service and his passion for bikes that itself tells you what kind of person he is and his enthusiasm for motorcycles.

Luis Perez

Arrow 71210PRI Pro-Race Exhaust, Nichrome for Aprilia Tuono V4 1100RR / Factory 2017-2024 71210PRI

06/17/2024

AKRAPOVIC Muffler - Carbon Fiber F900R / XR 2020-2023 S-B9SO2-APC 1811-4056

Excellent Service & Prodcuts

Bill’s exhaust personally took the time to customize my experience and be sure I got exactly what I was looking for at the best possible price. There was quick & attentive communication for all my needs and I am extremely pleased with my product and service recieved.

Tyrone Grandison

AKRAPOVIC Muffler - Carbon Fiber F900R / XR 2020-2023 S-B9SO2-APC 1811-4056

05/11/2024

ALPINESTARS T-GP Plus R v4 Airflow Jacket

The best summer time jacket I have owned from alpinestars so far! I love the fit and airflow!

Sean Douglas

ALPINESTARS T-GP Plus R v4 Airflow Jacket - Black/White - Large 3300624-12-L

05/09/2024

DYNOJET Power Commander-6 - Honda PC6-16005

Solid imporvement to a poor running bike

Had some fuelling issues in the midrange - tough to find ECUs for bikes of this age these days. Power commander sorted it out, very happy with my purchase and Bill's service.

Michael Lavdas

DYNOJET Power Commander-6 - Honda PC6-16005

Bill is a solid guy - will definitely shop here in the future

Had a bit of a miscommunication with the shipping timelines offered on the website as the part had to leave the vendor, arrive at Bill's shop and then be shipped to me. I reached out to Bill and he was quick to do what he could to make it right. My part arrived as quickly as he could make it happen and I appreciated the effort he put in. I'll definitely be shopping here again, fair prices and a good guy to work with.

M.L.

Bills Performance

05/03/2024

Two Brothers Exhaust

Highly recommend Bill’s Performance!

jason landers

04/26/2024

Fmf

Excellent service 👏

Paul Stevens

04/22/2024

Yoshimura RS12

Amazing product and phenomenal change is performance . I really loved it
Thanks to Bills performance for the amazing service and quick shipping
Highly recommended service

Vimal Menon (vime-9930)

YOSHIMURA Rs12 System Hon 228450S320

01/24/2024

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