Free Flow Chains possess dimensional restraints and so require particular sprockets.
Tsubaki offers sprockets for Dual In addition Chains, sprockets for Dual In addition Chains with top rollers, and sprockets for RS Chain with outboard rollers.
Product Lineup
Product Types / Features
Sprockets for Dual Plus Chain/Middle Roller Chain
Sprockets for Double Plus Chain/Middle Roller Chain. Can be used with Double Plus Chain with snap covers.
Details
Sprockets for Double Plus Chain with Outboard Rollers
Make use of Sprockets for Dual Plus Chain.
Details
Sprockets for RS Chain with Outboard Rollers
Outboard chain sprocket Rollers on RS Chain with outboard rollers may interfere with sprocket hubs based on the number of sprocket teeth. Utilize this special sprocket instead.
Details
Sprockets for Dual In addition Chain with Top Rollers
R Rollers on Dual Plus Chain with Best Rollers could cause interference with regular sprocket teeth. Utilize this special sprocket rather.
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Sprockets for RS Chain with Best Rollers
Use Drive 
Sprockets.
Details