Performance muscle cars at Terry's Speed Shop
Terry's Speed Shop

Performance
Starts Here

From custom builds and turbo installs to maintenance and diagnostics — we work on every make and model. Proudly serving New Hampshire from Barnstead.

500+
Builds Completed
10+
Years Experience
100%
Satisfaction
What We Do

Our Services

Performance Upgrades

Intake, exhaust, headers, cams, and more. We'll push your vehicle to its full potential with proven performance parts.

Engine Builds

From mild street builds to full race engines. Precision-assembled with quality components for reliability and power.

Forced Induction

Turbo and supercharger installations with proper supporting mods, tuning, and fuel system upgrades.

Suspension Upgrades

Coilovers, lowering springs, sway bars, and complete corner setups for improved handling and stance.

Brake Upgrades

Big brake kits, performance pads, rotors, and lines for stopping power that matches your horsepower.

Diagnostics

Advanced diagnostic equipment to pinpoint issues fast. Check engine lights, performance problems, and drivability concerns.

General Repair

Oil changes to engine overhauls. We handle all makes and models with the same attention to detail.

Maintenance

Keep your vehicle running strong with scheduled maintenance, fluid services, and preventive care.

Custom Fabrication

Custom exhaust, roll cages, brackets, mounts, and specialty fabrication for unique builds.

Vehicle Inspections

Pre-purchase and safety inspections. Know exactly what you're buying before you sign.

Tuning Preparation

Dyno-ready prep, wiring, sensor checks, and hardware staging so your tune goes smoothly.

Dealer Vehicle Locating

Need a specific car? We'll leverage our dealer network to find the exact vehicle you're looking for.

Our Work

Featured Builds

2008 Subaru STI

2008 Subaru STI

Upgrades: IAG longblock, FP Black turbo, upgraded flex fuel system, FMIC, ACT clutch, Airlift suspension, custom Varis body kit & paint

2017 BMW M2

2017 BMW M2

Upgrades: 1st top mount turbo F87 M2 in US, upgraded X clutch, RTD shifter, intake manifold with port injection, flex fuel, methanol injection, upgraded FMIC

2013 Mitsubishi Evo X

2013 Mitsubishi Evo X

Upgrades: Upgraded turbo, complete fuel system, ACT clutch, HKS coilovers, EBC brakes, custom powder coat, carbon fiber & titanium

2008 BMW 135i

2008 BMW 135i

Upgrades: Top mount G35-1050 turbo, intake manifold with port injection flex fuel, methanol injection, 7.5" FMIC, RevShift drivetrain mounts, X clutch twin disc, RTD shifter, BC coilovers, EBC brakes

The Difference

Why Choose Us

Experienced Technicians

Our team brings decades of hands-on experience with performance vehicles, muscle cars, and modern platforms.

Honest Pricing

No surprises, no hidden fees. We provide detailed quotes upfront so you know exactly what you're paying for.

Quality Parts

We source parts from trusted manufacturers and suppliers. Your build deserves components that perform and last.

Performance Focused

Every bolt we turn is with performance in mind. We don't cut corners — we build it right the first time.

Fast Turnaround

We respect your time. Efficient scheduling and clear timelines mean your car gets back to you faster.

Customer Satisfaction

Our reputation is built on happy customers. From first call to final handoff, we make the experience seamless.

Reviews

What Our Customers Say

"Great service and fair prices. Only place I'll be bringing my evo to from now on. Very helpful, all around awesome guy!"

Dan McNamara

Mitsubishi Evo

Ready to Build Something Fast?

Whether it's a full build or a simple tune-up, we're here to help. Give us a call or schedule your appointment today.