O.S. Max 21 VZ-B V-Spec-T (P) Off-Road 1/8 scale racing engine has hardened, chrome-plated, 4-port, cylinder and liner for high durability and long life. Machined steel piston features parallel rings that trap fuel oils and use them as a seal to enhance compression and boost power. Reshaped crankcase core ensures smoother air flow and more consistent performance. Slide Valve Carburetor with 8mm and 9mm Carb restrictors allow tuning to specific track conditions, Low-end Needle adjusts from side to side for maximum adjustment ease. V-shaped two-piece turbo head design provides fast heat dissipation. This product includes one .21 VZ-B V-Spec-T (P) racing engine w/21C carburetor. One P3 Ultra Hot Turbo plug. One instruction manual w/OS decal. One extra head shim/gasket(The other gasket is pre-installed). One 8mm carb restrictor. One 9mm carb restrictor. One exhaust port seal ring. Two carb rubber gaskets. One carb cover. One exhaust cover.

#203 Air Cleaner Assembly. Most of the fuels we carry meet or exceed the lubricant content required for optimum performance and maximum engine life. In the past, the conventional lubricant content used in fuel was 18%. But with new advanced technologies, fuels like Red Alert and O'Donnell for example, have a better quality of lubricants even though the percentages of lubricant content are lower. These high-tech lubricants provide exceptional cooling and protection.