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January 9, 2020

Engine Sprocket
We’ve several rear sprocket options available for our customers to “great tune” their gas operated bicycle to achieve their desired optimal quickness/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. Small the trunk sprocket, the faster the bike will proceed, but will climb hills much less effectively. You are trading power for swiftness or vice versa.
We offer sizes of 36 tooth, 44 tooth, 48 tooth, and 56 tooth sprockets in the Large 9-hole gear. The internal diameter is 1.4″, hole spacing is usually 1″. See table below for specifications. Commonly, the large 9-hole sprocket with 48 tooth configuration should come with the 4G T-Belt Drive 4-stroke engine kit.

Rear Sprocket (Large 9 Hole) Hole Spacing Internal 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″ Sluggish High Sold Separately

The tiny 9-hole sprockets come in two sizes, 44 tooth and 50 tooth. The inner diameter can be 1.39″ and hole spacing is 1″. See desk below for specifications. The tiny 9-hole 44 tooth sprocket should come with the SkyHawk Position Fire 2-stroke engine kit.

Rear Sprocket (Small 9 Hole) Hole Spacing Internal 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″ Sluggish High Sold Separately