SRAM PG850 8 Speed Cassette
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SRAM PG850 8 Speed Cassette with Power Glide II technology.
Top Features of the SRAM PG850 8 Speed Cassette
- Technology: Power Glide II
- Gear Ratios: 11-32, 11-28T
- Speeds: 8
- Weight: 280g/250g
- Body: Steel
- Finish: Chrome Plated
About Cassettes & Freewheels
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.
About the SRAM brand
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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Product Q & A
Ask your questions and share your answers.
11-30 (11-12-14-16-18-21-26-30 tooths)
11-32 (11-12-14-16-18-21-26-32 tooths)
12-23 (12-13-14-15-17-19-21-23 tooths)
12-26 (12-13-15-17-19-21-23-26 tooths)
If you want to run this larger 8-speed 11/28t. cassette on your road bike you would need a new rear mech a Shimano DuraAce RD-7900 would work, unless you want a huge expense stick with either your original 13/26t (13-14-15-17-19-21-23-26) or the two other slightly better options that will increase your speed on the downhills upto 34mph @ cadence of 100, they are the aforementioned 12/25t or 12/26t options.
Just changed from 12-23T cassette to 11-28T (all 8sp).
No change (even adjustment) needed to derailleur. Works just perfect onthe road (250km into life of product)
This cassette fits Campagnolo Khamsin or Fulcrum 7 wheels (shimano freehub).
KMC 8 speed chain fits this cassette.
Would even go with a 12-28 if the mech could work with it, but then I start to loose the nice small steps between gears, and dont want to replace the mech if i don't have to. (not for another 8 speed one at least)
I'm just a fattie trying to get up hills a little easier.
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