OS Max 21 XZ-B Ver.II #OS12183
he engine OS MAX 21 XZ-B V II is the consistent further development of the legendary OS V-Spec series (world champion 2008) and will certainly continue this successful series in the 1/8 off-road area. Important changes in details ensure maximum performance while at the same time optimizing fuel consumption. A new 22B2 carburetor with a 7 mm Venturi insert is also used. The proven P3 turbo candle ensures safe and powerful operation in all speed ranges.
The blue anodized aluminum cylinder head ensures excellent cooling.
The engine contains a P3 turbo plug.
Characteristics:
Developed for aspiring RC buggy racers on a scale of 1: 8
Reliable and low-maintenance engine
Technical specifications:
Distance fixing holes lengthways [mm]: 21mm
Distance fixing holes across [mm]: 37mm
Version: 2-stroke nitro
Mounting hole Ø [mm]: 3.3mm
Bore [mm]: 16.27mm
Stroke: 16.8mm
Width [mm]: 45mm
Speed range approx .: 3000-41000 rpm
Total weight [g]: 362g
Height approx. [Mm]: 102.2mm
Displacement [ccm]: 3.49ccm
Length to hub: 64.5mm
Length overall approx. [mm]: 94.4mm
Power (PS) at: (2.6) at 34,000 rpm
Carburetor: 22B2
Venturi: 6mm (orange) for Off Road and 7mm (yellow) GT class
Shaft thread: UNF1 / 4.28
