XP 4 Street 50

2008 Polini XP 4 Street 50 Technical Analysis & Specification Breakdown

At the heart of the 2008 Polini XP 4 Street 50 super motard motorcycle, Polini pairs a 49 cc (3 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 39.0 x 41.0 mm (1.5 x 1.6 inches).

On the scales, the XP 4 Street 50 measures 68 kg (150 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,150 mm (45.3 in) wheelbase engineered for quick, flickable steering geometry.

Within MotoLibrary's Polini archive, this model family spans 2 indexed model years from 2008 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.