All four XR models use four-stroke engines (not as common in dirt bikes as two-stroke engines due to the usual power difference), however these engines were designed well enough that they all provide plenty of kick with the added benefit of higher fuel efficiency over similar two-stroke engine models. These bikes are known for their excellent performance and handling. All models have low-maintenance, single disc braking systems with two-caliper front system gripping for the added stopping power these fast bikes need. They all have a state of the art suspension in both the front and rear, each having a minimum of 16-way adjustable dampening on them for maximum shock absorption and comfort. All models come in a standard red, the only the color associated with Honda racing motorbikes.