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There aren’t many times a replacement part actually improves your bike but put one on your bike and you’ll wonder why you didn’t install a NINJA sooner. The bearings are housed in an alloy shell and wrapped with plastic and fibre. This fusion of the three materials provides the bearings a solid platform to sit on and extends their lives. A lot of people would be satisfied with this, but they went even further by extending the alloy shell so the right and left sides lock together. This locks the frame, cranks and bottom bracket together and provides unparalleled stiffness.
We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.
Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.