Freewheel 108.9 - 18T

Description

Description - 108 engagement points and 9 pawls made of highly resistant treated steel - 3 groups of 36 engagements each, obtaining 108 engagement points per revolution. - Extraction by means of a standard 4-point extractor key - Standard 1.37'' x 24T thread - New reinforced internal COMAS springs to increase reliability and precision. - Lateral bearings on both sides - Compatible with 1/8” and 3/32” chains Material - Crown: machined Cr-Mo steel - Body: machined Cr-Mo steel Compatibility -Not compatible with BB30 cranks - Not compatible with cassette type cranks Size - 18 teeth - 9 pawls - 108 engagement points - Tooth width: 2.2mm - Total width: 17mm Weight - 176g Finish - Black finish with laser engraved COMAS graphics. Additional information It is advisable to run-in the pinion beforehand to remove excess grease from the mechanism and ensure the correct seating of the triggers. This process can be speeded up by pouring a little oil into the groove between the center of the pinion and the teeth. If the sprocket is used for trials without first seating the triggers, it will not work properly and will cause it to jump, damaging the spline and trigger.