Rim Wheel - Rear - 18.0 x 2.15 Inch - 25mm ID - 32 Spokes - Dirt Bike - Apollo Thunder 250 108799 Next gear on shaft has

Next gear on shaft has 17 teeth

Small gear has 27 teeth  OD: 49mm

This tank fits 50cc

#24 on the TRANSMISSION diagram

Rim Wheel - Rear - 18.0 x 2.15 Inch - 25mm ID - 32 Spokes - Dirt Bike - Apollo Thunder 250 108799 Next gear on shaft hasRear 18 x 2. 15 Inch Dirt Bike Rim Wheel Version 1850 This rear rim wheel fits the Apollo Thunder 250 dirt bike. This size is used on several makes and models of 250cc dirt bikes. Please use detailed measurements and pictures to help you get the correct rim for your machine. Wheel details: Rear 18. 0 x 2. 15 inch 32 spokes Center hole diameter: 25mm (0. 98 in) Overall width of rim: 152mm (6. 0 in) Overall rim diameter: approx 49. 5cm (19. 5 in) (6) M8