The new SRAM RED Powerdome X is the most advanced cassette ever made. Its super light, deadly silent, and delivers an undeniable performance advantage. The eight cogs in the middle are machined from a single block of high grade tool steel, increasing stiffness while weighing even less than a titanium cassette.Between each cog in the block is a StealthRing elastomer to reduce vibration and noise. Cutouts on the rear cog further reduce weight and add stiffness. Its the final piece in the drivetrain puzzle, paired with the new SRAM RED Rear Derailleur, delivers ultra-fast, ultra-quiet shifts that will always put you in the right gear.

The new SRAM RED Powerdome X is the most advanced cassette ever made. Its super light, deadly silent, and delivers an undeniable performance advantage. The eight cogs in the middle are machined from a single block of high grade tool steel, increasing stiffness while weighing even less than a titanium cassette.Between each cog in the block is a StealthRing elastomer to reduce vibration and noise. Cutouts on the rear cog further reduce weight and add stiffness. Its the final piece in the drivetrain puzzle, paired with the new SRAM RED Rear Derailleur, delivers ultra-fast, ultra-quiet shifts that will always put you in the right gear.

The new SRAM RED Powerdome X is the most advanced cassette ever made. Its super light, deadly silent, and delivers an undeniable performance advantage. The eight cogs in the middle are machined from a single block of high grade tool steel, increasing stiffness while weighing even less than a titanium cassette.Between each cog in the block is a StealthRing elastomer to reduce vibration and noise. Cutouts on the rear cog further reduce weight and add stiffness. Its the final piece in the drivetrain puzzle, paired with the new SRAM RED Rear Derailleur, delivers ultra-fast, ultra-quiet shifts that will always put you in the right gear.

The new SRAM RED Powerdome X is the most advanced cassette ever made. Its super light, deadly silent, and delivers an undeniable performance advantage. The eight cogs in the middle are machined from a single block of high grade tool steel, increasing stiffness while weighing even less than a titanium cassette.Between each cog in the block is a StealthRing elastomer to reduce vibration and noise. Cutouts on the rear cog further reduce weight and add stiffness. Its the final piece in the drivetrain puzzle, paired with the new SRAM RED Rear Derailleur, delivers ultra-fast, ultra-quiet shifts that will always put you in the right gear.

Five-arm, CNC-machined aluminum spider provides a rigid foundation. Includes a precision-forged 7000 series aluminum lock ring.

Five-arm, CNC-machined aluminum spider provides a rigid foundation. Includes a precision-forged 7000 series aluminum lock ring. Available in five color combinations to customize your ride.

From the toughest World Cup courses to the smoothest bike paths, SRAM PowerGlide II cassettes bring the right combination lightweight materials, durable construction and precise engineering to the ride.

The XG-1180 MINI CLUSTER hybrid cassette is light, durable and equipped with a 10-42 gear range that's a perfect fit for any ride. MINI CLUSTER construction combines three small cogs that are CNC-machined out of a single block of billet steel with an additional eight cogs that are individually pinned together. The XG-1180 delivers SRAM's trusted cassette design at a great value for every rider.

The easy-shifting cogs of this lightweight cassette offer strength and precise shifting, while the PowerGlide II technology means the SRAM PG820 8spd cassette is both reliable and durable.

The easy-shifting cogs of this lightweight cassette offer strength and precise shifting, while the PowerGlide II technology means the SRAM PG820 8spd cassette is both reliable and durable.

The easy-shifting cogs of this lightweight cassette offer strength and precise shifting, while the PowerGlide II technology means the SRAM PG820 8spd cassette is both reliable and durable.

PowerGlide II 8-speed performance in an all-steel cassette. Cassette technology optimized for offroad. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting.

PowerGlide II 8-speed performance in an all-steel cassette. Cassette technology optimized for offroad. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting.

PowerGlide II 8-speed performance in an all-steel cassette. Cassette technology optimized for offroad. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting.

If you're a rider who needs to run an 8 speed drivetrain, the PG 850 is a great choice for light weight, strength, and quick shifting.

If you're a rider who needs to run an 8 speed drivetrain, the PG 850 is a great choice for light weight, strength, and quick shifting.

If you're a rider who needs to run an 8 speed drivetrain, the PG 850 is a great choice for light weight, strength, and quick shifting.

If you're a rider who needs to run an 8 speed drivetrain, the PG 850 is a great choice for light weight, strength, and quick shifting.

If you're a rider who needs to run an 8 speed drivetrain, the PG 850 is a great choice for light weight, strength, and quick shifting.

If you're a rider whose performance needs or riding style dictates that you run a 9 speed drivetrain, the PG 950 is the right choice for light weight, strength, and precise shifting.