High performance at realistic prices, the new Mega ZX21 proves this by offering truly high performance without seriously denting your wallet. Made for Serpent by Picco Micromotori in Italy, this engine has a real strong pedigree.

Crankcase
This all new grey anodized crankcase has been forged from high grade aluminum and is therefore very strong and highly durable. The design incorporates many cooling fins to keep the temperature under control whilst the internal porting ensures optimized gas flow.
To ensure a perfect seal, when the carburretor is mounted, the opening for the carb has been fitted with a rubber o-ring whilst to enable the smoothest possible movement of the crankshaft the casing has been fitted with Swiss-made high quality bearings. For looks, the side of the crankcase sports the new Mega Symbol on the front side and the ZX21 logo on the rear side.

Cooling Head
This beautiful Orange anodized cooling head features 9 cooling fins for regulating the temperature of your engine. The head has been machined around the edges to allow access to the engine mount screws as well as to make it look nicer. On top of the cooling head is the Mega Symbol, ZX21 logo and the engine categorization symbols, all laser etched.

Combustion Chamber
Made from the finest quality alloy this combustion chamber for normal plugs, is precision made to ensure a prefect seal even under extreme temperatures. Glow plug is not supplied (recommend Mega 7 Cold #200170).
An optional turbo insert can be mounted and used with concical 7C plug #200171.

Crankshaft
Made from high strength steel the crankshaft is finished to the highest standard. It has a large bore intake which is optimized to best accommodate the fuel flow as well as a three turbo scoops on the bellcrank that force the fuel into the combustion chamber. The big end pin is unique on this crankshaft as it has been pressed into the end of the crankshaft rather than machined from the same piece of material. This enables the use of a harder more wear resistant material which increases durability of the engine.

Carburettor
This easy to adjust 2 needle carburettor maintains its needle settings, regardless of temperature, thanks to its design and the materials used in its construction. This carburettor comes with 3 different venturies that can be easily interchanged to fine tune your fuel economy.

Piston & Conrod
This super lightweight piston has been machined from high grade aluminum and features 2 rings around its circumference for aiding lubrication. The piston has been made using true ABC (aluminum piston, brass sleeve with chrome plating) construction for ultra long usage with little or no visible wear.
Utilising bronze bushings top and bottom the conrod is aerodynamic and lightweight therefore reducing resistance and allowing the piston to move faster.

Sleeve
This 5 port high-density hard-chromed sleeve, offers incredible durability coupled with highly effective porting ensure that maximum revs are achieved as well as producing a wide power band.

Backplate
The crankcase back plate is cast and features a 0-ring groove and 2 aerodynamic lugs for improved mixture flows and lubrication.

Packaging

Mega ZX21 Off-Road Race Engine with three tuning venturi's