CeramicSpeed OSPW RS 5-Spoke Oversized Pulley Wheel System for Shimano Dura-Ace 9250 and Ultegra 8150
SKU: 5711050125906
AVAILABILITY: In stock (5 items)
Package size: 20 x 12 x 6 cm | Weight: 0.3 kg
The CeramicSpeed OSPW RS 5-Spoke is an oversized pulley wheel system for Shimano Dura-Ace RD-9250 and Ultegra RD-8150 rear derailleurs. Bigger 13 and 19 tooth pulleys bend the chain less as it runs through the cage, which cuts drivetrain friction for road racing, time trials and triathlon.
The RS cage has a sharper, modern shape and is reinforced for more strength and durability than earlier OSPW versions, with aluminium 5-spoke pulleys running on CeramicSpeed bearings. It weighs about 85 g. The complete system comes ready to fit to your derailleur; remove the derailleur before packing your bike for a flight.
| Feature | What it does for you |
|---|---|
| Oversized pulleys | 13T top and 19T bottom pulleys reduce chain articulation and friction. |
| Reinforced RS cage | New angular design with added strength and durability. |
| Aluminium 5-spoke pulleys | Light, stiff pulley wheels on CeramicSpeed bearings. |
| Shimano fit | Made for Dura-Ace RD-9250 and Ultegra RD-8150. |
| Light | About 85 g net. |
| Compatibility | |
|---|---|
| Derailleurs | Shimano Dura-Ace RD-9250, Ultegra RD-8150 |
| Chain | 12-speed |
| Largest cassette sprocket | 34T |
| Use | Road and triathlon |
| Build | |
| Pulleys | Aluminium, 5-spoke |
| Teeth | 13T top, 19T bottom |
| Cage | Carbon reinforced with polyamide |
| Net weight | 85 g |
| In the box | Complete OSPW RS 5-Spoke system |
| Shipping and package | |
|---|---|
| Package size (L x W x H) | 20 x 12 x 6 cm |
| Shipping weight | 0.29 kg |










