KTR Performance

KTR Performance Performance Automotive shop specializing in installing performance packages on late model GM vehicles . Whipple & Magnuson approved installer.

Unleash your vehicles full potential.

After a busy year in the shop building some incredible projects, it's time for some much-needed R&R.KTR Performance will...
08/07/2026

After a busy year in the shop building some incredible projects, it's time for some much-needed R&R.

KTR Performance will be closed August 7–17 and will reopen on Tuesday, August 18. We'll return all calls, emails, and inquiries as soon as we're back in the shop.

In the meantime, start planning your next project. Whether you're looking for more horsepower, sharper handling, upgraded brakes, or a complete performance package, we'll be ready to hit the ground running when we return.

Have a great week, and we'll see you on the 18th.

08/06/2026

Months of planning, fabrication, and countless hours in the shop have all led to this.

The KTR Sierra is back together with upgraded power, suspension, brakes, interior, and a fresh set of Weld Racing wheels wrapped in Continental tires.

The shop truck represents the quality of work that leaves our building, and this one is ready to hit the street.

08/04/2026

The finishing touch.

A Sierra Denali interior, custom center console fabrication, and a manual shifter that looks like it belongs there from the factory.

08/03/2026

With the powertrain, suspension, and brakes complete, there was one more area of the truck that deserved the same attention—the interior.

A set of leather seats and a center console sourced from a Sierra Denali transformed the cabin, while a little custom fabrication made the manual shifter look right at home.

The result is an interior that feels just as refined as the rest of the build.

08/02/2026

The front end is officially complete.

To match the Ridetech 4-link rear suspension, the front received Ridetech coilovers along with a complete big brake upgrade featuring 16" rotors and Corvette ZR1 6-piston calipers.

With the suspension and braking upgrades complete, the KTR Sierra is one step closer to getting back on the road. Next is a nice interior upgrade to tackle before the final reveal.

07/24/2026

One of the most satisfying moments of any build. After countless hours measuring, fitting, assembling, and double-checking, the bed is finally going back on the KTR Sierra.

07/22/2026

Check out the new 4 link setup and 4 piston caliper upgrade before the bed goes back on. This will drastically improve the way this truck handles and brakes.

Stay tuned as we tackle the suspension and brake upgrades up front to complete this phase of work.

We are ready for final assembly after cleaning the frame, installing C notches, and applying fresh coating to the frame....
07/20/2026

We are ready for final assembly after cleaning the frame, installing C notches, and applying fresh coating to the frame.

Here’s a better look at the rear components used for suspension and brake upgrade. Ridetech 4-link system with coilovers and 4 piston caliper upgrade using Corvette C7 calipers.

The brake system upgrade was made possible with brackets provided by CTSVBrakeSwap.com.

07/16/2026

The next chapter of the KTR Sierra build is underway. Time for the suspension and brakes to catch up to the power this truck now makes.

The factory leaf spring rear suspension is being replaced with a complete Ridetech 4-link system and coilovers, while the braking system is receiving a major upgrade with Corvette ZR1 6-piston calipers up front with massive 16” rotors and Corvette 4-piston calipers in the rear.

07/14/2026

Wheels are a great way to transform a vehicles appearance and bring vehicle accents together. Ferrada FR2 wheels with silver spokes and a polished lip did just that by matching the car’s silver stripes and small chrome accents.

Installing a new set of Powerstop Stop cross drilled, slotted, and coated rotors finished it off for a whole fresh new look. We also disabled the AFM feature to keep this vehicle running on all 8 for the best crusing experience!

The end result is a Camaro that looks more dialed-in, feels tighter on the road, and drives the way the owner always wanted it to.






Address

46 Route 13
Brookline, NH
03033

Telephone

+16037698614

Website

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