The parts menu is where coins become tenths. This Sunmori drag bike game guide ranks every engine part by what it actually does over 201 meters.
How parts work
Parts modify the engine's power curve: where torque lives, how fast revs climb, and how the bike delivers it all. No part exists in isolation. A bore kit without clutch upgrades just spins harder; a cam without breathing mods chokes at the top.
The parts, ranked
For 201m value: clutch and drivetrain first (delivery beats power), then bore kits (torque everywhere), then cams and head work (top-end power), then intake (breathing to support the rest). Exhausts sit apart because they also retune your ears; the exhaust guide covers the fallout.
Build paths
Torque path: bore kit plus clutch for brutal launches and short-strip dominance. Rev path: cams plus intake plus exhaust for bikes that pull hardest in the last 100 meters. Pick the path that matches your gearing, test in free ride, and never change two parts at once.