Best Performance Transmission Hard Parts of 2025

The Painless Performance Torque Converter Lock-Up Kit for TH700R4 Transmission simplifies the control of the lock-up function on your overdrive transmission. It is compatible with carbureted and fuel-injected engines, eliminating the need for separate, expensive computer-controlled equipment. The kit includes a vacuum-controlled switch, 4th gear pressure switch, brake switch, torque converter lock-up solenoid, wire harness, new transmission pan gasket, and mounting hardware. The installation process is hassle-free and can fit any GM TH700R4 transmission.

Lokar Transmission Dipstick is a USA-made product with a flexible inner cable that is easy to read. The black fittings add a sleek look to your vehicle. The flexibility of the dipstick cable ensures convenient and accurate readings. Being made in the USA ensures high quality and durability. This dipstick is a reliable and user-friendly tool for checking your transmission fluid levels.

The B&M Aluminum Transmission Pan is a high-quality transmission upgrade that offers several benefits for your vehicle. With its cast aluminum construction, this transmission pan is both lightweight and durable, ensuring long-lasting performance. The pan adds an extra 2 quarts of oil capacity, providing increased cooling ability for your transmission. This is particularly useful for heavy-duty applications or vehicles that are frequently subjected to high temperatures. Additionally, the pan features a built-in drain plug, making fluid changes quick and easy. The included mounting hardware ensures a hassle-free installation. With the B&M Aluminum Transmission Pan, you can enjoy improved transmission performance and peace of mind, backed by a 1 year limited warranty.

The Lokar Billet Adjustable Column Arm Kit for GM TH-350/TH-400 Transmission is designed to offer rigidity with its billet aluminum construction, while the 3/4-48 spline allows for proper ratio. The U-cut-to-fit stainless connecting rod requires no threading, making it easy to install. This kit is vehicle specific and designed for column shift, making it a perfect addition for those looking for performance transmission hard parts.

The Banks TransCommand Transmission is designed specifically for your vehicle, ensuring a perfect fit. With dimensions of approximately 29.5 cm long, 11.9 cm high, and 23.4 cm wide, it is compact yet powerful. Weighing in at just under 10 pounds, this transmission is manageable for installation. Made in China, it offers reliability and quality. By choosing this product, you enhance your vehicle's performance, ensuring smoother gear shifts and improved efficiency on the road.

The Lokar Transmission Dipstick is a high-quality product designed for GM 4L80 transmissions. Its flexible design, including a dipstick, funnel adapter, and braided stainless outer housing, ensures ease of use and durability. The stainless steel finish adds a sleek look to your vehicle. With package dimensions of 2.794 H x 39.624 L x 22.86 W (centimeters), this dipstick is compact and easy to store. Made in the United States, you can trust its quality and reliability for your transmission needs.

The B&M Shift Improver Kit enhances your automatic transmission's performance by ensuring smooth, precise shifts. This upgrade helps reduce shift overlap, which can lead to unnecessary wear on clutches and bands. With two options available, you can choose Stage 1 for RV and heavy-duty use, or Stage 2 for street and racing applications. The installation is straightforward and can be completed with basic hand tools, making it accessible for most users. Additionally, this kit is backed by a one-year limited warranty, providing peace of mind with your purchase.

The Lokar Hi-Tech Kickdown Kit is designed for use with automatic C-4 transmissions, and is adaptable to all types of manifolds. Its stainless steel construction and Teflon-lined cables offer extended life, while the aluminum fittings provide durability. This kit is an excellent choice for those looking to upgrade their transmission kickdown system.

The Lokar Electric Kickdown Kit is designed for use with TH400 transmissions and is adaptable to all types of manifolds. It features a stainless steel Teflon-lined cable for extended life and comes with aluminum fittings. The kit includes a U cut to fit stainless steel Teflon-lined outer housing, a stainless inner wire, and a mount bracket.

The Lokar Kickdown Cable Kit is designed to enhance your Ford AOD transmission. It features black anodized aluminum fittings that not only add a sleek look to your engine compartment but also ensure durability. The specially extruded liner increases the cable's lifespan, giving you peace of mind during use. Additionally, the polished ferrule helps prevent frayed cable ends, which can lead to performance issues. With this kit, you can enjoy improved functionality and aesthetics in your vehicle.