From what I've read, assembled bikes have a 13% duty on top of the taxes. Most components, with the exception of the frame are duty free.
You can see if they will ship the wheels separately to pay less duty. It's 6.5% duty on assembled wheels.
Below are the tariff number and the taxes if any for importing bike parts into Canada.
8712.00.00 – Complete Bikes – 13%
8714.91.10 – Frame lugs, bottom bracket shells, forks, fork tubing sets, fork bearing assemblies, hydraulic shock absorbing cylinders, spring shock absorbers, rear pivots, cable stops, cable guides and back, chain and seat stays – 0%
8714.91.90 – Frames and forks and parts thereof, OTHER than the above – 5%
8714.92.00 – Wheel rims and spokes – 0%
8714.93.00 – Hubs, other than coaster braking hubs and hub brakes plus free-wheel sprocket wheels – 0%
8714.94.00 – Brakes, including coaster braking hubs and hub brakes plus parts thereof – 0%
8714.95.00 – Saddles – 0%
8714.96.00 – Pedals and crank-gear, and parts thereof (I’d put chainrings in here too) – 0%
8714.99.10 – Bicycle wheels (I’m assuming assembled) – 6.5%
8714.99.90 – OTHER bike parts – 0%