O.S. Max-21VZ-M (21D) W/2K Flywheel
Description:
O.S. quality and precision engineering for your marine project.

As with all O.S. products, this engine packs a mighty punch for it's size and all the spares neccessary to ensure you are covered when it comes to maintaining your motor are available.

Please refer to the attached pdf files for more detailed information.

FEATURES :
    * The 21VZ-M boasts ABC construction and a liner porting and inner head designed specifically
       for high nitro boat competition.
    * Other high-performance features include a water-cooled plug cap and 2K flywheel.

SPECIFICATIONS :
    * Displacement: 3.46cc (0.211cu.in.)
    * Bore: 16.6mm
    * Stroke: 16mm
    * Output: 2.5ps/33000rpm
    * Weight : 23.6 oz (670g)
    * Practical RPM: 3000~40000
    * High performance engine for race use