Front Sprocket for Benelli TNT 125
MREV-P-000014Front Sprocket for Benelli TNT 125: Heat-treated Chromoly 440 steel for the front sprocket that drives the chain. Select a tooth count, spline profile and chain size that match the bike. When the existing front sprocket teeth are worn, inspect the chain and rear sprocket too.
Front Sprocket for Benelli TNT 125 mounts on the gearbox output shaft to drive the chain and transfer power to the rear wheel. For TNT 125, a photo taken with the sprocket cover removed helps identify the spline profile and retaining arrangement.
What is Chromoly 440 steel used for?
Chromoly 440 steel is used for the front sprocket, which is CNC-machined and heat-treated. Steel suits the small front sprocket, whose teeth drive the chain through repeated revolutions. When selecting a replacement front sprocket, the priorities remain correct chain-size engagement and a secure spline fit on the shaft. Regular chain cleaning and adjustment also affect sprocket wear.
Selecting tooth count for your riding needs
Consider the front tooth count together with the rear sprocket currently fitted. Dividing rear teeth by front teeth gives the final drive ratio. When replacing a front sprocket, retain the tooth count if you are happy with the bike's current riding characteristics. This model is available with 15 teeth.
Checks before installation
If replacing only a worn front sprocket, start with the current tooth count and check clearance under the cover. Identify the version by examining the back face of the old sprocket and the shaft retaining hardware. Matching steel type or finish color does not establish mounting dimensions.
Compatible vehicle models for Front Sprocket for Benelli TNT 125
Recorded gearing options
Only recorded pitch, position and tooth options are shown. Final-drive changes must be evaluated against the complete front/rear setup; tooth count alone is not treated as a performance claim.