Handlebars for Vespa Largeframe Models from the 60s/70s are designed for round or trapezoidal Headlight Units, depending on the model, and their shape is adapted accordingly.
If a Handlebar is broken or damaged, it should be replaced for safety reasons. Various round and trapezoidal Handlebars are available for this purpose. Handlebars of different models can also be interchanged in the large frames - interesting for custom conversions, but also in terms of safety and riding comfort. A technical plus point: clear glass headlights can be installed in the round Handlebars of the Rally/VBB, which provide significantly better light output. Throttle and Gear Tubes (for 4-speed Models) are already pre-assembled on all Handlebars. The digital SIP Speedometer/Rev Counter is also available for all Handlebars.
SIP-TIP:
It is best to order new Screws for the Steering Head, suitable Plates and the Steering Head Bearing Set at the same time.
Note: For all replica handlebars, there may be wider tolerances in the diameter of the head tube socket, depending on the production batch. If the diameter is too small, do not force the handlebar onto the head tube, as this may cause cracks. In this case, the head tube socket must be expanded or reamed to the correct size.
If the diameter is too large, there is a risk of breakage if the headset screw is tightened too tightly—beyond 45 Nm.
Never use excessive force when installing the headset bolt. In some cases, the primer inside the hole is applied too thickly. On some models, the hole for the handlebar stem screw may also be too close to the Steering Column. This can be remedied with a suitable round file: rework the hole by about 3 mm until the screw can be inserted without force.
We inspect 100% of all Steering Heads for the correct dimensions and also send them to a specialized German workshop to adjust them to the exact diameter of the PIAGGIO, RMS, and CIF Steering Columns. We carry these Handlebars under the SERIE PRO logo.
Note: The Handlebar is only partially compatible when used with original parts. Minor adjustments to the Handlebar may be necessary.