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NEW PRODUCTS   /   CYCLOID SERIES   /  
  • NEW
Product code :
CY4-SWN

CY4-SWN FOR SHIMANO

Sales price : JPY
10,400
COLOR :
CHAINRING SIZE :
Quantity :
cycloid-swn
Ultra-high performance, Wide and Narrow tooth profile, Single Chainring, with superior functionality to any other ovals, specially designed for SHIMANO crank.

More and more bikes that are intended for long ride, hill climb, gravel and cyclocross are built with wide-range cassette drivetrains. Thus, there's an undeniable appealing simplicity to a single-ring setup in various situations.

Wide-Narrow Chainring
Alternating narrow and wide teeth makes the chain more secure on the ring and eliminates chain drop, optimized design for front-single chainring.

CYCLOIDⅡmechanism
CYCLOIDⅡis the non-circular chainring developed uniquely by Sugino.
“Autofocus mechanism” assists your pedal stroke to remain smooth and efficient at all time so that your pedaling technique can be dramatically improved. Thus, CYCLOIDⅡis the innovative high performance chainring, totally different from any other ovals

"What is Autofocus mechanism?"
When the forth is applied to the pedal, the chain moves outward. You feel the ring increases the diameter as the chain runs higher on the ring. As amount of moving will fluctuate by the force applied, it maximizes the benefits of non-circular ring, and assists your pedal stroke to remain efficient.
*there is no need of pedal stroke analysis to identify peak point or adjustment of mounting position.

Material : CNC aluminum alloy

Compaitiblity :
SHIMANO ROAD CRANK
FC-R9100 / 9000
FC-R8000 / 6800
FC-R7000 / 5800
FC-R4700

SHIMANO GRAVEL CRANK
FC-RX810-1
FC-RX600-1

Chain : SHIMANO 11 speed / 10 speed
P.C. D. : 110mm (SHIMANO 4 Bolts)
Size : 38T, 40T
Color : Dark grey / Red

You can use the original bolts that came with your SHIMANO crank or #704 for SHIMANO Road crank or #804 for SHIMANO Gravel crank (sold separately). *By using #704 or 804, overall weight of your bike will be kept down.

CY4-SWN DARK GREY

DARK GREY anodized with laser-etched graphics

CY4-SWN DARK RED

RED anodized with laser-etched graphics

AUTOFOCUS MECHANISM

When the force is applied to the pedal, the chain moves outward. You feel the ring increases the diameter as the chain runs higher on the ring. As amount of moving will fluctuate by the force applied, it maximizes the benefits of non-circular ring, and assists your pedal stroke to remain efficient.
*there is no need of pedal stroke analysis to identify peak point or adjustment of mounting position.

Wide-Narrow Chainring

Alternating narrow and wide teeth makes the chain more secure on the ring and eliminates chain drop, optimized design for front-single chainring.

Other recommended products

#704 FOR SHIMANO F-Single

Sales price : JPY 3,500

Chainring fixing bolt and nut set for double to single setup conversion for SHIMANO CRANK, made of High-strength and Ultra-light aluminum alloy.

#804 FOR SHIMANO

Sales price : JPY 2,200

Chainring Fixing Bolt set for SHIMANO CRANK, High-strength aluminum alloy torx bolts. Ultra-light alloy bolts can reduce the overall weight of your crank

STI Stopper

Sales price : JPY 3,800

STI Stopper is used for a bicycle converted from double to single setup. Install it on shifting cable to hold STI lever (dual control lever) in place. Made of stainless steel.