Guide

Right pedal loosens counterclockwise and left pedal loosens clockwise; both tighten toward the bike’s front.

For SPD pedals for a road bike, pick Shimano PD-M520 or PD-M540 for daily road rides; step up to XT/XTR for lower weight and crisper entry.

For triathlon bikes, dial your fit first, then match frame, wheels, and storage to your race type, budget, and event rules.

Most modern road bikes use four-stroke engines; two-stroke engines live on mainly in off-road machines, small scooters, and racing niches.

Bike size depends on height, inseam, and riding style; use the chart and quick checks below to pick a frame that fits.

For which size mountain bike should i get?, pair your height and inseam to a size chart, then confirm reach and standover with a quick stand-over test.

Pick a mountain bike size by matching your body to reach, standover, and wheel size so the ride feels stable, nimble, and pain-free.

Ride on the same side as traffic in your country—right in the U.S. and Canada, left in the U.K. and Australia.

In the UK, the front brake is on the right-hand lever and the rear brake is on the left-hand lever on bicycles.

In the UK, the back brake on a bike is operated by the left-hand lever; the right-hand lever runs the front brake.