Shopping Cart

(0 item)

Your cart is empty

Bicycle Engine Sprocket Guide

We have several rear sprocket options available for our customers to “fine tune” their gas operated bicycle to achieve their desired optimal speed/power gear ratio.

A note to remember: The larger the rear sprocket, the slower the bike will go, but will have power to climb hills. The smaller the rear sprocket, the faster the bike will go, but will climb hills less effectively. You are trading power for speed or vice versa.

We offer sizes of 36 tooth, 44 tooth, 48 tooth, and 56 tooth sprockets in the Large 9-hole gear. The inner diameter is 1.4", hole spacing is 1". See table below for specifications. Commonly, the large 9-hole sprocket with 48 tooth configuration will come with the 4G T-Belt Drive 4-stroke engine kit.

Rear Sprocket (Large 9 Hole) Hole Spacing Inner Diameter Outer Diameter Top Speed Acceleration/Power Included With
36 Tooth 1" 1 13/32" 5 7/8" Fast Low Sold Separately
44 Tooth 1" 1 13/32" 7" Moderate+ Moderate- Sold Separately
48 Tooth 1" 1 13/32" 8 1/8" Moderate- Moderate+ 4G T-Belt
56 Tooth 1" 1 13/32" 9" Slow High Sold Separately

The small 9-hole sprockets come in two sizes, 44 tooth and 50 tooth. The inner diameter is 1.39" and hole spacing is 1". See table below for specifications. The small 9-hole 44 tooth sprocket will come with the SkyHawk Angle Fire 2-stroke engine kit.

Rear Sprocket (Small 9 Hole) Hole Spacing Inner Diameter Outer Diameter Top Speed Acceleration/Power Included With
44 Tooth 1" 1.39" 7 1/8" Moderate+ Moderate- SkyHawk Angle Fire
50 Tooth 1" 1.39" 8 1/8" Slow High Sold Separately

We also carry 5-hole sprockets in 44 tooth, and 48 tooth sizes. The inner diameter is 2.5" and the hole spacing is 2". Outer diameters are 7" for the 44 tooth and 8" for the 48 tooth

Rear Sprocket (5 Hole) Hole Spacing Inner Diameter Outer Diameter Top Speed Acceleration/Power Included With
44 Tooth 2" 2.5" 7" Moderate+ Moderate- SkyHawk Angle Fire
48 Tooth 2" 2.5" 8" Moderate- Moderate+ Sold Separately

We offer a 6-hole sprocket in 36 tooth, 44 tooth, and 50 tooth sprocket sizes. Inner diameter 1.8" and hole spacing of 1.5". Outer diameters are 5 7/8" for the 36 tooth, 7.25" for the 44 tooth, and 8 1/8" for the 50 tooth

Rear Sprocket (6 Hole) Hole Spacing Inner Diameter Outer Diameter Top Speed Acceleration/Power Included With
36 Tooth 1.5" 1.8" 5 7/8" Fast Slow Sold Separately
44 Tooth 1.5" 1.8" 7 1/4" Moderate+ Moderate- Sold Separately
50 Tooth 1.5" 1.8" 8 1/8" Slow High Sold Separately

We offer a disc brake sprocket that bolts to the brake rotor hub in a 44 tooth sprocket. Inner diameter is 1.29" and hole spacing is 1" with an outer diameter of 7"

Disc Brake Sprocket (9 Hole) Hole Spacing Inner Diameter Outer Diameter Top Speed Acceleration/Power Included With
44 Tooth 1" 1.29" 7" Moderate+ Moderate- Sold Separately