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12 Speed Cassettes & Freewheels

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SRAM Eagle PG1230 Cassette 12s 11-50

SRAM

SRAM Eagle PG1230 Cassette 12s 11-50

$186.00 Full price
$186.00
Club price
$189.00 Full price
Shimano 105 CS-R7100 12 Speed Cassette 11-34T

Shimano

Shimano 105 CS-R7101 12 Speed Cassette 11-34T

$99.00 Full price
$99.00
Club price
$109.99 Full price
25% Off Full Price
Shimano SLX CS-M7100 12 Speed Cassette 10-51

Shimano

Shimano SLX CS-M7100 12 Speed Cassette 10-51

$149.00 Full price
$149.00
Club price
$199.99 Full price
24% Off Full Price
Shimano XT M8100 12 Speed Cassette 10-51T

Shimano

Shimano XT M8100 12 Speed Cassette 10-51T

$199.00 Full price
$199.00
Club price
$264.99 Full price
SRAM XG1275 Eagle Cassette 10-52T Black

SRAM

SRAM XG1275 Eagle Cassette 10-52T Black

$397.00 Full price
$397.00
Club price
$399.00 Full price
SRAM Rival XG-1250 12=Speed Cassette 10-36T

SRAM

SRAM Rival XG-1250 12=Speed Cassette 10-36T

$225.00 Full price
$225.00
Club price
$227.00 Full price
Shimano CS-R8101 Ultegra Cassette 11-34T 12-Speed

Shimano

Shimano CS-R8101 Ultegra Cassette 11-34T 12-Speed

$165.00 Full price
$165.00
Club price
$169.99 Full price
37% Off Full Price
Shimano Deore CS-M6100 12 Speed Cassette 10-51T

Shimano

Shimano Deore CS-M6100 12 Speed Cassette 10-51T

$125.00 Full price
$125.00
Club price
$199.99 Full price
Shimano Dura-Ace R9200 12-Speed Cassette 11-34T

Shimano

Shimano Dura-Ace R9200 12-Speed Cassette 11-34T

$525.00 Full price
$525.00
Club price
$527.99 Full price
SRAM XS-1275 T-Type Eagle 12 Speed Cassette 10-52T

SRAM

SRAM XS-1275 T-Type Eagle 12 Speed Cassette 10-52T

$399.00 Full price
$399.00
Club price
$430.00 Full price
Shimano Ultegra CS-R8100 12 Speed Cassette 11-30T

Shimano

Shimano Ultegra CS-R8100 12 Speed Cassette 11-30T

$165.00 Full price
$165.00
Club price
$169.99 Full price
SRAM XX Eagle XS-1297 T-Type 12-Speed MTB Cassette 10-52T Silver/Black

SRAM

SRAM XX Eagle XS-1297 T-Type 12-Speed MTB Cassette 10-52T Silver/Black

$899.00 Full price
$899.00
Club price
$945.00 Full price
SRAM Eagle XG1275 12 Speed Cassette 10-50T

SRAM

SRAM Eagle XG1275 12 Speed Cassette 10-50T

$389.00 Full price
$389.00
Club price
$397.00 Full price
Shimano CS-M6200 12-Speed MTB Cassette 10-51T

Shimano

Shimano CS-M6200 12-Speed MTB Cassette 10-51T

$139.00 Full price
$139.00
Club price
$149.99 Full price
Shimano Dura-Ace R9200 12 Speed Cassette 11-30T

Shimano

Shimano Dura-Ace R9200 12 Speed Cassette 11-30T

$375.00 Full price
$375.00
Club price
$399.95 Full price
Shimano CS-HG710 105 Cassette 11-36T 12-Speed

Shimano

Shimano CS-HG710 105 Cassette 11-36T 12-Speed

$99.00 Full price
$99.00
Club price
$109.99 Full price
Shimano 105 Di12 R7100 11-34T 12 Speed Cassette

Shimano

Shimano 105 Di12 R7100 11-34T 12 Speed Cassette

$99.00 Full price
$99.00
Club price
$109.99 Full price
SRAM XPLR XG-1251 Rear Cassette XDR 12 Speed 10-44T

SRAM

SRAM XPLR XG-1251 Rear Cassette XDR 12 Speed 10-44T

$265.00 Full price
$265.00
Club price
$272.00 Full price
Shimano CS-M8200 XT 12 Speed Cassette 10-51T

Shimano

Shimano CS-M8200 XT 12 Speed Cassette 10-51T

$239.00 Full price
$239.00
Club price
$249.99 Full price
18% Off Full Price
Shimano Deore XT M8100 12 Speed Cassette 10-45T

Shimano

Shimano Deore XT M8100 12 Speed Cassette 10-45T

$219.00 Full price
$219.00
Club price
$269.95 Full price
SRAM Apex PG-1231 XPLR Cassette 12 Speed 11-44T

SRAM

SRAM Apex XPLR 12-Speed MTB Cassette 11-44T

$213.00 Full price
$213.00
Club price
$218.00 Full price
SunRace MZ90 12-Speed MTB Cassette 11-50T Black Chrome

Sunrace

SunRace MZ90 12-Speed MTB Cassette 11-50T Black Chrome

$200.00 Full price
$200.00
Club price
$220.00 Full price
SRAM Rival XG-1250 D1 10-30T 12sp Cassette

SRAM

SRAM Rival XG-1250 D1 10-30T 12sp Cassette

$250.00 Full price
$250.00
Club price
$255.00 Full price
Shimano Deore XT CS-M8100 Cassette 10-45T 12-Speed

Shimano

Shimano Deore XT CS-M8100 Cassette 10-45T 12-Speed

$239.00 Full price
$239.00
Club price
$249.99 Full price
e*thirteen Helix Plus 12-Speed 9-50T XD Cassette Black

Helix

e*thirteen Helix Plus 12-Speed 9-50T XD Cassette Black

$360.00 Full price
$360.00
Club price
$389.99 Full price
ATA Cassette 12 Speed 11-50T Chrome Plated

ATA

ATA Cassette 12 Speed 11-50T Chrome Plated

$90.00 Full price
$90.00
Club price
$99.99 Full price
Shimano Ultegra R8100 12 Speed Cassette 11-30T

Shimano

Shimano Ultegra R8100 12 Speed Cassette 11-30T

$165.00 Full price
$165.00
Club price
$169.99 Full price
SRAM Force XG-1270 D1 12-Speed Road Cassette 10-30T

SRAM

SRAM Force XG-1270 D1 12-Speed Road Cassette 10-30T

$289.00 Full price
$289.00
Club price
$335.00 Full price
SRAM XG-1295 Eagle 12 speed Cassette 10-52T Black

SRAM

SRAM XG-1295 Eagle 12 speed Cassette 10-52T Black

$649.00 Full price
$649.00
Club price
$713.00 Full price
Shimano Deore CS-M7200 12-Speed MTB Cassette 10-51T

Shimano

Shimano Deore CS-M7200 12-Speed MTB Cassette 10-51T

$189.00 Full price
$189.00
Club price
$199.99 Full price
SRAM XS-1270 Eagle Transmission 12-Speed MTB Cassette 10-52T

SRAM

SRAM XS-1270 Eagle Transmission 12-Speed MTB Cassette 10-52T

$369.00 Full price
$369.00
Club price
$399.99 Full price
Campagnolo Chorus 12 Speed Cassette 11-34T

Campagnolo

Campagnolo Chorus 12 Speed Cassette 11-34T

$359.00 Full price
$359.00
Club price
$364.95 Full price

Find Your Size

Step 1: Measure your height

  • Take off your shoes
  • Stand with your back straight against a wall
  • Balance a book on your head to mark your height on the wall
  • Measure your height by the distance from the floor to the mark
cm

Find Your Size

Step 2: Adjust your inseam

  • Based on your height, we’ve calculated a starting point.
  • You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
  • Inseam typically falls with 5cm of the average.
cm

Find Your Size

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Mountain Bike Cassettes & Freewheels

Mountain Bike Cassettes & Freewheels

Mountain bike cassettes and freewheels for every trail and drivetrain setup. Upgrade your gearing with a wide range of sprockets built for MTB riding.

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11 Speed Cassettes & Freewheels

11 Speed Cassettes & Freewheels

Upgrade your 11 speed drivetrain with 99 Bikes range of 11 speed cassettes and freewheels built for smooth, precise shifting.

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10 Speed Cassettes & Freewheels

10 Speed Cassettes & Freewheels

Shop 10 speed cassettes and freewheels for road, MTB, and commuter bikes. Upgrade your drivetrain with the right gear range for smoother, more reliable shifting.

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9 Speed Cassettes & Freewheels

9 Speed Cassettes & Freewheels

Upgrade your drivetrain with 9 speed cassettes and freewheels built for reliable shifting across road, MTB and commuter setups. Shop a wide range online now.

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8 Speed Cassettes & Freewheels

8 Speed Cassettes & Freewheels

8 speed cassettes and freewheels for every riding style. Upgrade your drivetrain with reliable options suited to road, MTB, and commuter bikes.

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6 & 7 Speed Cassettes & Freewheels

6 & 7 Speed Cassettes & Freewheels

6 & 7 speed cassettes and freewheels for everyday riders and commuters. Reliable gearing upgrades that keep your bike shifting smoothly, available online and in store.

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Single Speed Cassettes & Freewheels

Single Speed Cassettes & Freewheels

Single speed cassettes and freewheels for every rider and setup. Shop a wide range online and find the right fit for your bike today, with fast delivery available.

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13 Speed Cassettes & Freewheels

13 speed cassettes and freewheels for riders who want the smoothest, widest gear range available. Shop a great selection online and in store today.

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