Silver Sport Transmissions (SST), a leader in modern transmission conversion systems, is proud to announce the release of its new PerfectFit™ Kit designed specifically for 1967–1987 Chevrolet and GMC K-Series trucks.

This new kit is built around the proven TREMEC TR-4050 five-speed transmission, combining rugged reliability with modern drivability. The system is engineered to deliver improved shifting precision, durability, and ease of installation for classic 4x4 enthusiasts looking to modernize their trucks without compromising strength.

This PerfectFit™ Kit includes:

• SST STX Short Throw Shifter – Robust design with a common two-bolt flange for crisp, confident shifting.
• Transfer Case Adapter Kit – Compatible with the desirable cast-iron NP205 (10-spline) transfer case and engineered with all components needed for seamless adaptation.
• Clutch Compatibility – Works with mechanical clutch linkage or SST’s proven hydraulic clutch actuators.
• Detailed Instructions & Lifelong Tech Support – SST ensures confidence from installation to every mile down the road.

With the TREMEC TR-4050 transmission as its foundation, the new kit offers exceptional performance for both on-road and off-road use.

“We designed this kit to give K-Series owners a transmission solution that installs cleanly and performs flawlessly,” said Jeff Kaufman, Vice President of Sales at Silver Sport Transmissions. “Just add your driveshafts—and hit the road.”

Complete PerfectFit™ Kits are available now through Silver Sport Transmissions.

Contact SST’s technical sales team for application details.