Cowl Rubber (Thin, Gray); Allstate, Vespa 250 13" across at top

13" across at top

but you would have to drill out the hole on the frame bigger (11mm to 13mm)

Comprehensive Fitment & Compatibility

this belt is constructed with specialized EPDM rubber compounds and high-tensile cords to resist the heat and stretching that lead to "belt snap" in tuned GY6 engines

Cowl Rubber (Thin, Gray); Allstate, Vespa 250 13" across at topThinner Grey cowl rubber for all 1950s and early 1960s Largeframe model Vespa and Sears Allstate scooters. Also available in Black Sku: 23088 B . Fits Models: VNA Vespa 125 57 59 125 Large Frame 8 in. VNB Vespa 125 59 66 125 Large Frame 8 in. VBA Vespa 150 58 60 150 Large Frame 8 in. VBB Vespa 150 60 67 150 Large Frame 8 in. VS5 Vespa GS 150 58 61 150 Large Frame 10 in.