Naraku Scooter Performance Big Bore Cylinder & Head Kit – 52.4mm – 137-4 – NK100.52

Want to wake up your scooter?

This Naraku big bore kit gives you a 52.4mm cylinder and head.

Part numbers are 137-4, NK100.52, and PR73.

It's a performance upgrade—more displacement, more power.

Brand new, no warranty from the manufacturer, but it's built to go.

If you're into tuning or just want a little extra grunt, this is a solid start.