| Baotian | Angel 50 (4-takt) BT49QT-12G | 02-20 | 139QMA/QMB |
| Baotian | City 50 (4-takt) | 02-20 | 139QMA/QMB |
| Baotian | Classic 50 (4-takt) BT49QT-9 | 02-20 | 139QMA/QMB |
| Baotian | Comfort 50 (4-takt) BT49QT-9S3 | 02-20 | 139QMA/QMB |
| Baotian | Diablo/Panther/Tiger (2-takt) BT49QT-28B | 02-20 | 139QMA/QMB |
| Baotian | Ghost 50 (4-takt) BT49QT-12E | 02-20 | 139QMA/QMB |
| Baotian | Retro 50 (4-takt) BT49QT-11 | 02-20 | 139QMA/QMB |
| Baotian | Rocky 50 (4-takt) BT49QT-18 | 02-20 | 139QMA/QMB |
| Baotian | Sport 50 (4-takt) BT49QT-7 | 02-20 | 139QMA/QMB |
| Baotian | Sprint 50 (4-takt) BT49QT-12 | 02-20 | 139QMA/QMB |
| Baotian | Vintage 50 (4-takt) BT49QT-21 | 02-20 | 139QMA/QMB |
| Benzhou | 139QMB (GY6) 4-takt motor | 00-20 | 139QMA/QMB |
| Flex Tech | Cityliner 50 AC (4-takt) BT50QT-9 | 00-20 | 139QMA/QMB |
| Flex Tech | Dolphin 50 AC (4-takt) HY50T-11 | 00-20 | 139QMA/QMB |
| Flex Tech | Firenze 50 AC (4-takt) YY50QT-21 | 00-20 | 139QMA/QMB |
| Flex Tech | Fun 50 AC (4-takt) YY50QT-6A | 00-20 | 139QMA/QMB |
| Flex Tech | Hurrican X1 50 AC (4-takt) LJ50QT-4 | 00-20 | 139QMA/QMB |
| Flex Tech | Hurrican X2 50 AC (4-takt) YY50QT-26 | 00-20 | 139QMA/QMB |
| Flex Tech | Jive 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Flex Tech | KVR 50 AC (4-takt) BT50QT-11 | 00-20 | 139QMA/QMB |
| Flex Tech | Napoli 50 AC (4-takt) YY50QT-25 | 00-20 | 139QMA/QMB |
| Flex Tech | Panter I 50 AC (4-takt) LJ50QT-4 | 00-20 | 139QMA/QMB |
| Flex Tech | Piacenza 50 AC (4-takt) YY50QT-31 | 00-20 | 139QMA/QMB |
| Flex Tech | Speedy 50 AC (4-takt) YY50QT-B | 00-20 | 139QMA/QMB |
| Flex Tech | Sprint 50 AC (4-takt) BT49QT-9 | 00-20 | 139QMA/QMB |
| Flex Tech | Topdrive 50 AC (4-takt) YY50QT-14 | 00-20 | 139QMA/QMB |
| Flex Tech | Topspeed 50 AC (4-takt) YY50QT-7A | 00-20 | 139QMA/QMB |
| Flex Tech | TVZ 50 AC (4-takt) YY50QT-C | 00-20 | 139QMA/QMB |
| Flex Tech | Venus 50 II AC (4-takt) HY50QT-6 | 00-20 | 139QMA/QMB |
| Flex Tech | VRR 50 AC (4-takt) YY50QT-10 | 00-20 | 139QMA/QMB |
| Garelli | Capri 50 AC (4-takt) | 06-20 | 139QMA/QMB |
| Garelli | Ciclone 50 AC (4-takt) | 06-20 | 139QMA/QMB |
| Garelli | Flexi 50 AC (4-takt) | 11-20 | 139QMA/QMB |
| Garelli | Tiesse 50 AC (4-takt) | 08-20 | 139QMA/QMB |
| Garelli | Tiesse 50 L AC (4-takt) | 11-20 | 139QMA/QMB |
| Garelli | Vip 50 AC (4-takt) | 07-20 | 139QMA/QMB |
| Garelli | Xò 50 AC (4-takt) | 10-20 | 139QMA/QMB |
| Generic | Cracker 50 4S (4-takt) | 00-20 | 139QMA/QMB |
| Generic | Onxy 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Generic | Pandora 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Generic | Race 2 GT50 (4-takt) | 00-20 | 139QMA/QMB |
| Generic | Sirion 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Generic | Vertigo 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Giantco | Cyrus 50 I AC (4-takt) | 07-08 | 139QMA/QMB |
| Giantco | Cyrus 50 II AC (4-takt) | 08-20 | 139QMA/QMB |
| Giantco | Dolphin 50 I AC (4-takt) | 09-20 | 139QMA/QMB |
| Giantco | G-Buddy 50 AC R10/R12 (4-takt) | 10-20 | 139QMA/QMB |
| Giantco | Lambros 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Giantco | Sprint City 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Giantco | Sprint Sport 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Giantco | Stealth 50 AC (4-takt) | 08-20 | 139QMA/QMB |
| Giantco | Stealth 50 Naked AC (4-takt) | 09-20 | 139QMA/QMB |
| Giantco | Venus 50 I AC (4-takt) | 07-08 | 139QMA/QMB |
| Giantco | Venus 50 II AC (4-takt) | 08-20 | 139QMA/QMB |
| Giantco | Venus 50 IID AC (4-takt) | 10-20 | 139QMA/QMB |
| Hooper | One 50 AC (4-takt) | 12-20 | 139QMA/QMB |
| Hyosung | New Tee Up 50 (HN50QT-7) | 00-20 | 139QMA/QMB |
| Kreidler | Flory 50 AC (4-takt) | 05-20 | 139QMA/QMB |
| Kreidler | Jigger City 50 AC (4-takt) | 10-20 | 139QMA/QMB |
| Kymco | Agility 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Kymco | DJ 50 S AC (4-takt) | 00-20 | 139QMA/QMB |
| Kymco | Filly 50 AC (4-takt) | 98-00 | 139QMA/QMB |
| Kymco | Filly 50 LX AC (4-takt) | 06 | 139QMA/QMB |
| Kymco | Like 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Kymco | New Dink 50 AC (4-takt) | 06-11 | 139QMA/QMB |
| Kymco | Nexxon 50 AC (4-takt) | 08-09 | 139QMA/QMB |
| Kymco | People 50 S (4-takt) | 06-10 | 139QMA/QMB |
| Kymco | Sento 50 AC (4-takt) | 08-20 | 139QMA/QMB |
| Kymco | Super 8 50 AC (4-takt) | 07-20 | 139QMA/QMB |
| Kymco | Vitality 50 AC (4-takt) | 04-09 | 139QMA/QMB |
| Kymco | Yager 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Lifan | LF50QT | 00-20 | 139QMA/QMB |
| Malaguti | DVD 50 AC (4-takt) | 10-20 | 139QMA/QMB |
| Peugeot | V-Clic 50 AC (4-takt) | 07-20 | 139QMA/QMB |
| Peugeot | Vivacity 50 AC (4-takt) | 10-20 | 139QMA/QMB |
| Rieju | Pacific 50 AC (4-takt) | 08-20 | 139QMA/QMB |
| Rieju | Paseo 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| Rieju | Toreo 50 (4-takt) | 07-08 | 139QMA/QMB |
| Sachs | 49er 50 AC (4-takt) R10 (FY50QT-5) | 06-20 | 139QMA/QMB |
| Sachs | 49er 50 AC (4-takt) R12 | 08-20 | 139QMA/QMB |
| Sachs | Bee 50 (4-takt) (FY50QT-13) | 06-20 | 139QMA/QMB |
| Sym | Fiddle 50 AC (4-takt) | 99-08 | 139QMA/QMB |
| Sym | Orbit 50 AC (4-takt) | 00-08 | 139QMA/QMB |
| Sym | Symply 50 AC (4-takt) | 00-20 | 139QMA/QMB |
| TGB | City4 50 AC (4-takt) | 07-14 | 139QMA/QMB |
| Viarelli | Enzo 50 AC (4-takt) (E2) | 09-20 | 139QMA/QMB |
| Viarelli | Enzo 50 AC (4-takt) (E4) | 09-20 | 139QMA/QMB |
| Viarelli | GT1 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Matador 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Monztro 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Retro 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Rivetto 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | S3 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Sprint 50 G2 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Venice 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Vetus 50 AC (4-takt) | 09-20 | 139QMA/QMB |
| Viarelli | Vincero 50 AC (4-takt) | 09-20 | 139QMA/QMB |