Bikes: The JAP Long Four Speedway Engine

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Tilly Shilling, Engineer
She Made the Merlins Sing
Manx 30M

Krieger-Gnadig
First German Shaft Drive Motorcycles
KG (EN & ES)

Humber WC HO Twins
Advanced Machines of Edwardian Era
Watercooled Humber

The 1933 JAP long four with Right Hand 12.5% Downdraught Carb.

First of Down Draught carb type - Open Valved and Double Feed Oil Pump.

Boxer Performance
Increased torque and peak power for BMW Twins.