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Not sure what sized bike is best?

Answer a few short questions and we'll make a recommendation on which size is best for you.

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

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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

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Shop ATA

ATA delivers dependable gearing parts that won’t break the bank yet bring real performance to your bike. You get strong gear ratios, finishes that resist rust, and choices for 7 through 12 speed systems, all built for riders who ride hard and value value.

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Why Ride ATA?

  • Broad speed compatibility. ATA covers from single speed through to 12 speed drivetrains so you can find the right gearing for your terrain without overspending.
  • Durable finishes. The cassettes and freewheels often come chrome plated or with nickel black coatings that fight corrosion and maintain clean looks when wet or dusty.
  • Steel and carrier designs for strength. Steel sprockets and aluminium carriers are common, combining toughness with lower weight where it counts most.
  • Clear fitment support. Fitments like HyperGlide driver systems ensure ATA parts slot into existing hub setups correctly so swapping is smoother.

Popular ATA Ranges Explained

ATA Cassettes/Freewheels

The ATA Cassettes/Freewheels range includes entry through mid tier options made to slide into 7, 8, 9, 10, 11 and 12 speed systems. Larger sprockets extend your climbing range while finishes like matte nickel black or chrome plating help protect against wear. Compatible with Shimano HyperGlide style drivers and indexed freewheel hubs, these parts deliver value without surprise fitment issues.