99 Bikes Castle Hill is located in Sydney's northwest, on Victoria Avenue, Castle Hill. Our Castle Hill bike shop has a huge range of road bikes, mountain bikes, hybrid bikes, commuter bikes, fixie bikes, cruiser bikes, BMX bikes and kids bikes. Open 7 days, with on-site bicycle mechanics, offering workshop servicing and repairs on any bike, any brand. 99 Bikes offers the guaranteed best price on bikes, parts and accessories on world leading brands such as Garmin, Shimano, BBB, Fox, Merida, Norco, Lapierre, Apollo, Mongoose and more. 99 Bikes is the bike shop for riders in Castle Hill, Pennant Hills, Toongabbie, Wentworthville, Hornsby, Blacktown and other north western Sydney areas.