KX125 2003-2008

FACTORY CONNECTION Shock Spring - Spring Rate 353 lbs/in ALN-0063

FACTORY CONNECTION Shock Spring - Spring Rate 353 lbs/in ALN-0063

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 375 lbs/in ALN-0067

FACTORY CONNECTION Shock Spring - Spring Rate 375 lbs/in ALN-0067

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Front Fork Springs - 0.40 kg/mm LSB-040

FACTORY CONNECTION Front Fork Springs - 0.40 kg/mm LSB-040

Regular price $142.49 USD

Regular price ~~$142.49 USD~~ Sale price $142.49 USD
Unit price per
FACTORY CONNECTION Front Fork Springs - 0.42 kg/mm LSB-042

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FACTORY CONNECTION Front Fork Springs - 0.42 kg/mm LSB-042

Regular price $142.49 USD

Regular price ~~$142.49 USD~~ Sale price $142.49 USD
Unit price per

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FACTORY CONNECTION Front Fork Springs - 0.46 kg/mm LSB-046

FACTORY CONNECTION Front Fork Springs - 0.46 kg/mm LSB-046

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Front Fork Springs - 0.48 kg/mm LSB-048

FACTORY CONNECTION Front Fork Springs - 0.48 kg/mm LSB-048

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 246 lbs/in ALN-0044

FACTORY CONNECTION Shock Spring - Spring Rate 246 lbs/in ALN-0044

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 269 lbs/in ALN-0048

FACTORY CONNECTION Shock Spring - Spring Rate 269 lbs/in ALN-0048

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 280 lbs/in ALN-0050

FACTORY CONNECTION Shock Spring - Spring Rate 280 lbs/in ALN-0050

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 290 lbs/in ALN-0052

FACTORY CONNECTION Shock Spring - Spring Rate 290 lbs/in ALN-0052

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 300 lbs/in ALN-0054

FACTORY CONNECTION Shock Spring - Spring Rate 300 lbs/in ALN-0054

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 313 lbs/in ALN-0056

FACTORY CONNECTION Shock Spring - Spring Rate 313 lbs/in ALN-0056

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 324 lbs/in ALN-0058

FACTORY CONNECTION Shock Spring - Spring Rate 324 lbs/in ALN-0058

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
FACTORY CONNECTION Shock Spring - Spring Rate 336 lbs/in ALN-0060

FACTORY CONNECTION Shock Spring - Spring Rate 336 lbs/in ALN-0060

Regular price $147.20 USD

Regular price ~~$142.49 USD~~ Sale price $147.20 USD
Unit price per
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 224 lbs/in SRSP 622840

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 224 lbs/in SRSP 622840

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 235 lbs/in SRSP 622842

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 235 lbs/in SRSP 622842

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 246 lbs/in SRSP 622844

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 246 lbs/in SRSP 622844

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 258 lbs/in SRSP 622846

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 258 lbs/in SRSP 622846

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 269 lbs/in SRSP 622848

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 269 lbs/in SRSP 622848

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 280 lbs/in SRSP 622850

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 280 lbs/in SRSP 622850

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 290 lbs/in SRSP 622852

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 290 lbs/in SRSP 622852

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 300 lbs/in SRSP 622854

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 300 lbs/in SRSP 622854

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 313 lbs/in SRSP 622856

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 313 lbs/in SRSP 622856

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 324 lbs/in SRSP 622858

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 324 lbs/in SRSP 622858

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 336 lbs/in SRSP 622860

Sale

RACE TECH Front/Rear Spring - Blue - Sport Series - Spring Rate 336 lbs/in SRSP 622860

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
RACE TECH Front Spring - Blue - Sport Series - Spring Rate 358 lbs/in SRSP 622864

Sale

RACE TECH Front Spring - Blue - Sport Series - Spring Rate 358 lbs/in SRSP 622864

Regular price $142.49 USD

Regular price ~~$148.15 USD~~ Sale price $142.49 USD
Unit price per

Sale
MOOSE RACING Fork Springs - 43.5 mm - 4.0 n/mm 0405-1177

Sale

MOOSE RACING Fork Springs - 43.5 mm - 4.0 n/mm 0405-1177

Regular price $104.45 USD

Regular price ~~$129.15 USD~~ Sale price $104.45 USD
Unit price per

Sale
MOOSE RACING Fork Springs - 43.5 mm - 4.2 n/mm 0405-1178

Sale

MOOSE RACING Fork Springs - 43.5 mm - 4.2 n/mm 0405-1178

Regular price $104.45 USD

Regular price ~~$129.15 USD~~ Sale price $104.45 USD
Unit price per

Sale
MOOSE RACING Fork Springs - 43.5 mm - 4.4 n/mm 0405-1179

Sale

MOOSE RACING Fork Springs - 43.5 mm - 4.4 n/mm 0405-1179

Regular price $104.45 USD

Regular price ~~$129.15 USD~~ Sale price $104.45 USD
Unit price per

Sale
MOOSE RACING Fork Springs - 43.5 mm - 4.6 n/mm 0405-1180

Sale

MOOSE RACING Fork Springs - 43.5 mm - 4.6 n/mm 0405-1180

Regular price $104.45 USD

Regular price ~~$129.15 USD~~ Sale price $104.45 USD
Unit price per

Sale
MOOSE RACING Fork Springs - 43.5 mm - 4.8 n/mm 0405-1181

Sale

MOOSE RACING Fork Springs - 43.5 mm - 4.8 n/mm 0405-1181

Regular price $104.45 USD

Regular price ~~$129.15 USD~~ Sale price $104.45 USD
Unit price per

Sale
MOOSE RACING Fork Springs - 43.5 mm - 5.0 n/mm 0405-1182

Sale

MOOSE RACING Fork Springs - 43.5 mm - 5.0 n/mm 0405-1182

Regular price $104.45 USD

Regular price ~~$129.15 USD~~ Sale price $104.45 USD
Unit price per

Sale
MOOSE RACING Shock Spring - 59/62 mm - 40 n/mm 1312-0961

Sale

MOOSE RACING Shock Spring - 59/62 mm - 40 n/mm 1312-0961

Regular price $106.35 USD

Regular price ~~$125.35 USD~~ Sale price $106.35 USD
Unit price per

Sale
MOOSE RACING Shock Spring - 59/62 mm - 42.5 n/mm 1312-0962

Sale

MOOSE RACING Shock Spring - 59/62 mm - 42.5 n/mm 1312-0962

Regular price $106.35 USD

Regular price ~~$125.35 USD~~ Sale price $106.35 USD
Unit price per

Sale
MOOSE RACING Premium Shock Rebuild Kit 129999460201

MOOSE RACING Premium Shock Rebuild Kit 129999460201

Regular price $122.50 USD

Regular price ~~$122.50 USD~~ Sale price $122.50 USD
Unit price per
POWERSTANDS RACING MX Lowering Link 04-04205-29

POWERSTANDS RACING MX Lowering Link 04-04205-29

Regular price $106.35 USD

Regular price ~~$106.35 USD~~ Sale price $106.35 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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