- 37.4mm= Suzuki FA50
- 37.4 mm = Morini scooter
- 37.5mm= suzuki katana
- 37.8mm =suzuki jr 50 (kids dirt bike)
- 38.0 mm = Batavus Laura M48/M56
- 38.0 mm = Piaggio/Gilera Hi-Per 2
- 39.0 mm = (Franco) Morini M1 Reed Valve
- 39.0 mm = Garelli NOI/ horizontal
- 39.0 mm = Minarelli AM 4 5 & 6 (Shifter)
- 39.1 mm = Peugeot scooter (Also Fox, Wallaroo and 103)
- 39.2 mm = Minarelli horizontal LC/AC and vertical scooter. qt50, mj50, lb50 chappy, lc50 champ
- 39.3 mm = Piaggio scooter LC/AC
- 39.6 mm = Honda PA50/Hobbit/Camino
- 39.7 mm = Yamaha DT50MX, FS1, RD50, RD60 motorcycles
- 39.7 mm = Kreidler shifter
- 39.7 mm = Kreidler Flory 2-Speed
- 39.7 mm = Sachs 50SW
- 40.0 mm = Derbi shifter (85 mm conrod length)
- 40.8 mm = KTM 65 SX
- 41.0 mm = Jawa 207,210
- 41.4 mm = Kymco scooter
- 41.4 mm = Honda MT5/NSR50/NS50/MTX-sh/MTX-ot/MB5/MBX50/MBX80 shifter
- 41.6 mm = Motobecane AV7/AV10
- 41.6 mm = Kawasaki AR50/80 shifter
- 41.6 mm = Kawasaki KX65
- 41.8 mm = Zundapp shifter
- 41.8 mm = Morini shifter
- 42.0 mm = Minarelli RV4 shifter
- 42.0 mm = Sachs 504 and 505 (A, B, C motors)
- 43.0 mm = Gilardoni 43mm stroke cylinder (Minarelli horizontal LC)
- 43.0 mm = Simonini 80cc cylinder (Vespa)
- 43.0 mm = Parmakit 80cc cylinder (Minarelli horizontal AC&LC)
- 43.0 mm = Derbi FDS/FDX shifter
- 43.0 mm = Puch automatic
- 43.0 mm = Tomos automatic
- 44.0 mm = Parmakit 80cc cylinder (Piaggio AC+LC)
- 44.0 mm = Sachs 504 and 505 “D” crank
- 44.0 mm = Fabrizi 44mm stroke cylinder (Piaggio LC)
- 44.0 mm = Simonini 80cc cylinder (Minarelli horizontal LC)
- 44.0 mm = 2FAST4RACE 44mm stroke cylinder (Minarelli horizontal LC and Piaggio LC)
- 45.8 mm = Kawasaki KX85
- 45.8 mm = Simonini 89.9cc cylinder (Minarelli AM6)
- 46.0 mm = Simonini 90.23cc cylinder (Minarelli AM6)
- 46.0 mm = Simonini 100cc engine (Vespa)
- 47.0 mm = Zundapp KS-80 (AC and LC)
- 48.95 mm = KTM 85 SX
- 50.8 mm = MT8/MB8 shifter
- 54.0 mm = Zundapp KS-175