Sinister Muscle Cars

11/26/2025

BLACK FRIDAY SALE!!

Now until December 25th all purchases will include a SINISTER hat/t-shirt, along with the following discounts

-$250 off any booked performance package with deposit

-$100 off any TEXAS SPEED cam shaft package

-$100 off all STAINLESS WORKS exhaust products (headers/cat back/axle back)

-$100 off all PRO HUB DYNO or street tuning appts

-%10 or more on larger booked performance / fab/ pro-touring packages with accepted contract

SHOOT US A CALL OR TEXT

Monday-Sunday all month long @ (724.961.4437)

11/24/2025

We’ve been hard at work over the past couple months creating what will be the new home of Sinister Muscle Cars.... Coming soon in Greensburg, PA.... Stay tooned!

11/24/2025

We’ve been hard at work over the past couple months creating what will be the new home of Sinister Muscle Cars.... Coming soon in Greensburg, PA.... Stay tooned!

11/17/2025

Out with the old. It sounds like GM is coming back swinging with new gas-powered 5.7L and 6.6L V8s. 🔥

03/31/2025

The amount of work the guys have been doing lately is something to be proud of! A Sinister pair of heads/cam
Vipers throwing it down in the shop this week. Both were tuned in house for drivability and picked up great power and torque!

Message us today to schedule your visit!

03/19/2025

Twin Cam Turbo kit going down today on this beast! It has been an extremely busy month, we have 5 turbo bikes to build for bike week but we are knocking them all out!

For all your Harley performance needs, send us a message to schedule a visit!

03/17/2025

We have officially begun prep!
It is time to get that pre season work done.

Camshaft packages starting at $4,500 (installed, tuned, and dynoed in house)

With over 10 years in business, we are your 1 stop shop of horsepower specialists!

Schedule your visit today!

02/28/2025

Hell of a week in the shop, the guys killed it catching up on shipping problems from last week and keeping on track!  remember to get a hold of us as our schedule is filling up quick for spring.  all of those looking to get prepared for the Whiskey Throttle Fair show, the sooner you get on the schedule the better chance of making in.  get a hold of us for all of your performance packages as well as tuning needs.

MS Tuning JJ Rodriguez Matt Wallace Nick Coberly withrow rabold

02/22/2025