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PROX Valve and Spring Kit 28.SIS1409-2

Name: PROX Valve and Spring Kit 28.SIS1409-2
Brand: PROX
SKU: 28.SIS1409-2
Price: 133.70 USD
Availability: InStock

$133.70 USD

~~$157.34 USD~~ $133.70 USD

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Replaces the OEM valves and valve springs
Steel, nitrided valves for increased durability and less wear under extreme conditions
Stronger valve springs deal with the extra weight of the steel valves
Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm
Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and valve seals

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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.

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11/12/2024

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Nice looking muffler

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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

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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)

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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!!

Myles Decker

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06/25/2024

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

Kevin Weis

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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.

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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

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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

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05/09/2024

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.

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Highly recommend Bill’s Performance!

jason landers

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04/26/2024

Fmf

Excellent service 👏

Paul Stevens

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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

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PROX Valve and Spring Kit 28.SIS1409-2