SRAM Ochain R Spider B1

The SRAM Ochain R Spider B1 is a tunable drivetrain spider built to improve control on rough, fast and technical trails. Its next-generation design lets the chainring rotate backwards, which helps decouple pedal feedback from the drivetrain. This reduces chain turbulence and noise, and helps the bike feel calmer when braking, cornering and riding through rough ground.

Key Features and Benefits:

• Pedal feedback decoupling spider system: The spider allows the chainring to rotate backwards under load, which helps separate drivetrain movement from forces that reach the pedals. This reduces kickback through the cranks, so the rider can hold a more stable position over rough terrain.
• External travel adjustment: The travel setting can be changed from the outside of the unit, with Lock, 3°, 6°, 9° and 12° options. This lets riders tune how much chainring rotation they want, so the setup can match trail speed, suspension feel and riding style.
• Direct crankset mounting: The Ochain R Spider B1 mounts straight to compatible SRAM 8-Bolt and 3-Bolt direct mount crank standards. This gives consistent behaviour across the drivetrain, as its action does not depend on the cassette gear being used.
• Improved braking and cornering stability: By reducing pedal feedback, the system helps the rider stay more settled when the bike is loaded under braking or cornering. This supports better control on steep, rough and technical sections.
• Reduced chain noise and turbulence: The backward rotation helps control unwanted chain movement through the drivetrain. This creates a quieter ride and helps the bike feel less harsh when the suspension is working hard.
• Re-engineered durability and sealing: The latest design has improved impact resistance and better sealing against dirt and water. This helps protect the internal parts, while the 100-hour elastomer and 200-hour full service intervals make maintenance clear and easy to plan.

The SRAM Ochain R Spider B1 is built for riders who want a calmer bike feel when the trail gets rough. Its adjustable travel settings make it easy to fine-tune drivetrain response, while its direct mount design keeps the system consistent across different gears. With 104 BCD chainring compatibility and support for key SRAM crank standards, it is a practical upgrade for aggressive trail, enduro and downhill bike setups.

Choose the SRAM Ochain R Spider B1 if you want a tunable way to reduce pedal feedback, cut drivetrain noise and improve control on demanding terrain.

Specification:

• Spider system that decouples pedal feedback from the drivetrain
• External travel adjustment with selectable travel settings
• Improves stability while braking and cornering
• Reduces chain noise and drivetrain turbulence
• Re-engineered design for improved impact resistance and durability
• Enhanced sealing for better contamination protection
• Compatible with SRAM 8-Bolt and SRAM 3-Bolt direct mount standards
• 104 BCD chainring compatibility
• Compatibility: SRAM 8-Bolt and SRAM 3-Bolt direct mount crank standards
• Chainring compatibility: 104 BCD
• Travel settings: Lock, 3°, 6°, 9°, 12°
• Included components: Ochain R spider, spider-to-crank mounting bolts
• Chainline compatibility: Virtual 3 mm offset when paired with SRAM XX 104 BCD T-Type chainring for CL55 compatibility
• Additional compatibility: Spacers and hardware required for CL56.5 mm DH compatibility when used with DH83 spindle cranks
• Service interval: 100 hours elastomer replacement, 200 hours full service