Cranksets

- AL6061-T6 crank with steel chainrings - 7/8sp compatible - 177mm Q-factor - 48.5mm chainline

Sporting a supreme strength-to-weight ratio, Specialized's S-Works Carbon Mountain Crank Arms are super stiff and ready to propel you up the trails. With a self-extracting bolt for easy maintenance, these fourth-generation hollow crank arms feature an oversized aluminum spindle with a spline interface. It fits all frames with 73mm bottom bracket shell and includes all hardware for Pressfit 30.

Light and strong, these Specialized S-Works carbon road arms, and spider give you the competitive advantage. - Light and strong, these S-Works carbon road arms give you the competitive advantage. - Hollow carbon crank arms offer superior stiffness. - Oversized alloy spindle with Hirth coupling interface. - Fits Specialized road frames with OSBB or PF30 bottom bracket shell. - BB30 compatible. - Compatible with Shimano and SRAM drivetrains. - Finish: Unidirectional carbon fiber - Spider: 110BCD

Sporting a supreme strength-to-weight ratio, Specialized's S-Works Carbon Road Crank Arms are super stiff and ready to propel you up the climbs. With a self-extracting bolt for easy maintenance, these fourth-generation hollow crank arms feature an oversized aluminum spindle with a Hirth coupling interface and a unidirectional carbon fiber finish. It fits Specialized road frames with an OSBB or Pressfit 30 bottom bracket shell.

Shimano's Tiagra Front Chainwheel is sleek, balanced and consistent. The Tiagra 4700 series provides serious entry-level riding performance with trickle-down technology from the top shelf Dura Ace line. - Series: Tiagra 4700 - Crank Construction: 2-piece crank construction - Cassette Compatibility: 10-speed - Chain Compatibility: Series color - Bottom Bracket: BB-RS500 / BB-RS500-PB

SRAM's Apex Crankset is designed for fine stiffness at an impressive weight. The cold-forged aluminum arms are tough, rigid and perfectly complement your favorite ride. SRAM's long-lasting Powerglide chainrings are hard anodized and designed for quick, positive shifting in all conditions. Plus, the Apex crankset comes with SRAM's smooth-spinning GXP bottom bracket.

With optimized crankarms made from 6061-series aluminum, SRAM's X5 Crankset is stiff, tough and ready to take on the mountain. Its 7075-aluminum X-Glide chainrings have multiple shift points designed for snappy, super-fast shifts up and down.

Origin-8's MTN Crankset is a nice upgrade for 9-speed drivetrains with ISIS bottom brackets (sold separately). It's made of light and durable 3D forged aluminum for solid power transfer with CNC-machined aluminum chainrings that are ramped and pinned for precision shifting.

Origin-8's Track/SS Crankset is made of light and durable forged aluminum. It has a fine machined-aluminum 46-tooth chainring for super-smooth pedaling and comes in a variety of colors to make your bike the coolest ride on the block.