About Us

TNK racing a Honda MSX on track in the mid-2010s

The photo above was taken during our MSX racing days in the mid-2010s. That passion eventually became the foundation of TNK.

We've been building big-CC Groms since the 2010s

What started as a passion for racing Honda MSXs in the mid-2010s has grown into a commitment to building better performance parts. We test, improve, and create products based on real experience behind the handlebars.

We create performance parts that are designed with real riders in mind. By focusing on thoughtful engineering, quality materials, and practical improvements, we build parts you can rely on every ride.

What we do

TNK Performance Parts is based in Thailand and focused on small-displacement Honda platforms: the Grom, MSX125, Monkey and Cub. We develop, test and supply engine components for riders and builders who want more from their 125cc engines, from hand-ported cylinder heads to CNC billet crankcases and engine swap kits.

Our biggest project so far is the TNK 442cc complete engine: an 85mm bore, 77.9mm stroke single with an SKS Racing CNC billet crankcase and 4-valve cylinder head, run in our Honda Wave 125 development bike. Follow the build in our Build Log.

We ship worldwide from Thailand. If you have a question about fitment or want to talk about a custom build, contact us.