Custom SIP "PX Racer"
The basis of the second SIP Racer is a Vespa PX 200 E, built in 1981. Alex bought the scooter in 1991. At that time, the colour was metallic blue and the PX was equipped with white plastic covers and indicator grilles. The scooter immediately had all the welds sanded down and the side covers were filled and primed. The final paint was light blue. The seat was lowered, the BITUBOS, which were unaffordable at the time, were fitted and then the first 200 cc engine was tuned. MALOSSI 211 cc, long stroke crankshaft, long primary, 28 mm DELL'ORTO and POLINI racing exhaust. The next modifications were 120 wide tyres, self-built full circle crank, 30 mm MALOSSI carburettor and a KEGRA racing exhaust.
On the way to becoming a street racer
In 1993 the scooter was converted into a street racer: Dropbar (the welding costs alone were DM 400 at the time), the prototype SIP spoiler and the prototype SIP racing seat were built. Famous today, unknown back then: the round tail lights. At that time everything was home-made, today many of these parts can easily be ordered. The engine modifications were upgraded to an MBD diaphragm intake with Polini superval diaphragm valve together with a 34 mm flat slide carburettor from DELL'ORTO and a NORDSPEED exhaust.
The paintwork became a classic racing livery of the late 80s and early 90s: yellow speedblocks with dark blue shadows on light blue paint. After the SIP Racer was on scooter runs in Germany, Austria and Italy almost every weekend, other scooterists became keen on special parts made of fibreglass and carbon. As a result, Alex and Ralf sold the first products at various scooter runs and founded "SIP Scootershop" in 1994.
New design and moderate tuning
In 2001, the time had come: after ten years on the road, a new look became necessary. Our old friend Pfeili from Pfeil Design, who had painted the best custom scooters in the German/Austrian scene in the 90s, was chosen to give the scooter a new design. Pfeili decided on two colours and a paint job in American paints. Dodge Viper blue with metallic effects changing from dark to light yellow in the lower area. To achieve the reference to the previous look, speedblocks were again painted in the same style over hand-painted flames, which are then overlaid with three-dimensional SIP logos. All accessories, including the carbon parts, such as the mudguard, drop cover, luggage rack cover and SIP seat were either painted, powder coated or chrome plated.
High praise and thanks to Pfeili, who has once again set standards in the custom scooter scene.
The shock absorbers are BITUBOS, the GRIMECA disc brake was converted to full hydraulic at the front with the new Spiegler brake hose. The SIP disc brake at the rear was installed in the semi-hydraulic version with the main brake cylinder under the left side panel. Well-tried modifications such as wide rear tyres and SIP drop bar were retained. The electrical connections were reduced to the bare essentials and built into the frame. The latest Daytona tachometer and SIP footrests were fitted to the scooter. Parts of the new Vespa Millenium were also fitted, such as halogen headlights and white turn signals in chrome housings. Nothing was particularly changed in terms of the engine, but the tried and tested combination was retained.
Many more details about the engine, a comprehensive parts list and exploded drawings can be found on the special page for the Custom Vespa PX "Racer".