Rugged Stainless Steel Crankshaft Sleeve Converts Gas Engines From One Inch To One Eighth Fast. Built Like Iron With Quarter Keyway For A No Sweat Swap On Pulleys And Gearboxes. Heavy Duty Extension Bushing Keeps Your Whip Running Smooth.

Heavy duty crankshaft sleeve adapter fits gas engines
✔️ Swaps one inch bores to point one two five extends half inch run

This rugged shaft converter works as a direct swap bushing for small gas engine cranks, typically slotted into DIY go karts, mowers, and track carts when owners want to drop in wider pulleys or newer gearboxes. It takes the headache out of drivetrain mods so your setup stays locked tight.

✅ Crafts straight from solid corrosion resistant thirty four stainless alloy
✅ Swaps one inch inner bores out for point one two five outer dimensions
✅ Stretches the working shaft footprint by a solid one point five inch stretch
✅ Packs high grade twelve dot nine bolts alongside matching steel flat rings

💡 Why choose oversized crank sleeve bushings for aftermarket belt drives?

These handy inserts lock down wobbly journal surfaces and stop belts from jumping teeth during hard launches.

- handles higher horsepower loads without letting factory bores chew themselves up over time

- slides right onto worn crank stubs to bring old equipment back to street legal spin limits

- mates perfectly with wide race tooth ribbed straps to keep RPM curves dead steady

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