JCS Performance

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JCS Performance We are a family owned and operated motorcycle shop. We can order accessories, tires, supplies, helmets and apparel.

We do everything from oil changes to performance motor work to custom fabrication on your Harley-Davidson motorcycle or custom.

10/09/2026

Harley twin cam high lift cam solution. This is our rocker box spacers. To help you all run high lift cams on a twin cam motor. Available on our website www.jcsperformance1.com. thanks for watching.

10/07/2026

Wanted to explain to you allwhys its important to run an external crank case breather line kits and a Catch Can. All harley motors

10/06/2026

Dyno Tune video of Mario's 128 motor upgrade. Full video coming soon. Using George Bryce Star Racing F-35 cam,Kibblewhite Precision Machining, Inc. valve springs gs Fuel Moto exhaust, and lots of parts from S&S Cycle - Motorcycle Parts . Thanks for watching.

10/03/2026

HPI vs Screamin Eagle CNC ported manifold. You can see how the Horsepower Inc. (HPi) manifold is more consistent all the way around the port. Giving you a better contact to the head. Giving you a correct seal. Just wanted to share some information. Thanks for watching.

10/01/2026

Another order of our Harley Head Porting Flanges going out to Kenny We would like tothank everyone who has purchased these and has introduced them to their head porting program. Again thank you for your support.

09/30/2026

Dyno tune a 124 cubic inch M8 GEN1 with a S&S Cycle - Motorcycle Parts 475 cam, pushrods, pushrods tubes and lifter cuffs. Used a Dynojet Research Inc. OG license. Very happy with the results. Thanks fir watching.

09/29/2026

Another one of our Harley Head Fixture Table going out the door. This Table helps you machine the inner diameter and the 3 angle of your valve seat. Giving you the ability to machine both front and rear Head at the time. Feel free to contact us with any further questions.

09/29/2026

...CNC plus2.5... FULL video of us porting a CNC Plus program. This is a program we have, you send us your CNC Screamin Eagle heads and we open them, porting them and I stall Kibblewhite Precision Machining, Inc. 2mm over size valves or George Bryce STAR RACING 2.5mm valves. And deck the heads for a higher compression ratio. Thanks for watching.

09/25/2026

Installation video on our JCS Performance External Breather line kits for the S&S air cleaner system. This helps you turn your backing plate into an External cran case Breather style. Helping you RE route the oilly mist that comes out from your motor into a catch can or a filter element. If you have any further questions. Feel free to contact us. Or go on our website www.jcsperformance1.com

09/24/2026

...SPC exhaust... my thought and opions. On a great set of exhaust. They sound good and really performed well on Rios 117ci. Thank for watching. JCS Performance SP Concepts • Stainless Powered Concepts

Address

11 S. 5th Street
McAllen, TX
78501

Opening Hours

Monday 10am - 7pm
Tuesday 10am - 7pm
Wednesday 10am - 7pm
Thursday 10am - 7pm
Friday 10am - 7pm
Saturday 10am - 4pm

Telephone

+19565667437

Website

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