Interior Trim and Accessories

Direct answer: The best interior upgrades for a performance car are the parts your hands touch on every drive: a weighted shift knob, a solid e-brake handle, and an armrest that fits. For Subaru WRX, STI, and BRZ owners, JDMuscle's Tanso, Suji Series, and LUX Series knobs plus carbon fiber e-brake handles are the highest-impact first step — they change how the car feels in minutes, not hours.

Interior trim and accessories are the fastest way to personalize your cabin. A weighted shift knob settles the shifter more positively between gears and shortens the perceived throw, while a carbon fiber e-brake handle replaces the factory rubber grip with something that looks and feels built for a driver's car. Suede and leather wraps add grip without hurting daily comfort.

What to look for: fitment first. Most Subaru manual models use an M12x1.25 thread pitch on the shifter — check your year and model before ordering — and e-brake handles are shaped around specific console designs. Match finishes (twill, forged, or colored carbon) to what is already in your cabin so the result looks intentional.

Popular brands in this collection include JDMuscle's own Tanso, Suji Series, and LUX Series shift knobs and carbon fiber e-brake handles, plus SXTH Element arm rest kits for the GR Corolla and other platforms.

Related pages: Shift Knobs & Accessories · Gauges · Wheel Accessories · Tanso Carbon Fiber Shift Knob · Carbon Fiber E-Brake Handle · Our Best Interior Trim & Accessories

What thread pitch do I need for a Subaru shift knob?

Most Subaru manual models use M12x1.25 — check your year and model before ordering. Match the knob's thread to your shifter so it threads on cleanly without adapters.

How hard is a shift knob or e-brake handle to install?

Thread-on knobs take minutes with basic hand tools, and e-brake handles typically slide over the factory lever. Most of these parts require no permanent modification.

Will these parts fit my non-Subaru car?

Some items, like universal shift knobs, fit many cars with the right adapter. Model-specific pieces such as e-brake handles and arm rest kits are built for their listed platforms — check the fitment notes before ordering.

Do interior mods affect my warranty?

Cosmetic, reversible interior upgrades generally do not affect a powertrain warranty. Keep your factory parts anyway — they make it easy to swap back at dealer visits.