This SRAM PG850 8 Speed Cassette is no longer available although you may find similar or newer versions below:
SRAM PG850 8 Speed Cassette with Power Glide II technology.
Cassettes and freewheels for bikes are a cluster of sprockets in a range of sizes offering a multitude of gear ratios. The difference between the two is, a cassette slots onto the freehub, which has the ratchet built in and is then secured with a lockring, whereas a freewheel is a cluster of sprockets built around a ratchet and threads directly on to the hub. Cassettes and freewheels come in many ratios, close ratio is when the number of teeth increase in small increments of 1 or 2 at a time, whereas a wide ratio is when the teeth increase in larger increments of 3 or 4 at a time. Most systems will use a cassette hub as these allow for a wider bearing spacing and increased axle life, you can also fit a larger quantity of sprockets onto a cassette hub with 11 speed systems now becoming available. With cassettes you must use the appropriate spacing for your gear levers and rear mech, Shimano and Campagnolo are not interchangeable so you will need to match the cassette to your levers for smooth and precise shifting. Sram and Shimano chains and cassettes will work together as they use the same spacing.
Product manuals and service guides for all SRAM, Rockshox, Avid and Truvativ products can be found at sram.com or videos can be found on YouTube. SRAM Corporation was founded in Chicago, IL (USA) in 1987 by six employees with one component, Gripshift Twist Shifters. Today, SRAM’s commitment and growth can be measured by its 1,500 employees, its 150+ cycling products, and it’s 12 facilities worldwide. SRAM has found tremendous growth through innovative products, unparallel customer service, strong sales, and complimentary acquisitions. SRAM acquisitions include Sachs Bicycle Components, purchased in 1997, a leading manufacturer of chains, cassettes and hubs. In 2002 SRAM purchased RockShox, the world’s mountain bike suspension specialist. 2004 brought the purchase of both Avid brakes and Truvativ cranks and components. The addition of these companies has allowed SRAM to grow into the world’s second largest component supplier to the cycling industry. SRAM's core philosophy is to make cycling better. Their commitment is expressed in their local, national and international team and event sponsorship.
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