Two-stroke spark plugs were subject to oil contamination and carbon build, but four-strokes don’t have this problem, but their plugs still wear out Read More...
Don't confuse the KX250 and Rm-Z250's dual-fuel injection system with Honda’s Dual-Timing injection system or KTM’s Split-Injection system Read More...
Riders in the past never came into the pits after a moto and screamed that they needed to change their fork springs—and air pressure is just a fork spring Read More...
On the eve of Supercross splitting from the FIM, we explain how the FIM got here — it goes back to 1984 and came to blows in 2001. The battle over money cost a lot of money Read More...
Think of the clicker adjusters on your fork and shock as water faucets. Most faucets use a common mechanism, typically a screw, to impede or expedite the flow of water. Faucets control fluid flow. Read More...
How up-to-date are you on the float valve, lift-height component and trampoline shim on the new generation of WP off-road and two-stroke forks? Read More...
The CR250 was a storied machine, from Steve McQueen to Rick Johnson to Johnny O'Mara to Jermy McGrath, it was omnipotent—2007 was its last hurrah Read More...
Oversteer is when the front wheel turns in sharply, but the rear wheel refuses to follow the same arc. The 2021 CRF450’s best trait is how accurate it is at turn-in. Every MXA test rider loved the 2021 CRF450 on corner entrance Read More...
Two-stroke fuel injection only uses the throttle body to meter the amount of air, the fuel is injected into the engine at the transfer ports. Read More...