| Aprilia | MX50 SM H2O 2T | 02-04 | Passar Metrakit Prorace cylinder |
| Aprilia | RS50 Extrema H2O 2T | 97-98 | Passar Metrakit Prorace cylinder |
| Aprilia | RS50 Replica H2O 2T | 99-05 | Passar Metrakit Prorace cylinder |
| Aprilia | RX50 Enduro H2O 2T | 95-05 | Passar Metrakit Prorace cylinder |
| Aprilia | RX50 Enduro Racing H2O 2T | 95-05 | Passar Metrakit Prorace cylinder |
| Aprilia | Tuono 50 H2O 2T | 03-04 | Passar Metrakit Prorace cylinder |
| Beta | ART Enduro 50 H2O 2T | 03-05 | Passar Metrakit Prorace cylinder |
| Beta | ART SM 50 H2O 2T | 03-05 | Passar Metrakit Prorace cylinder |
| Beta | RK6-T 50 H2O 2T | 01 | Passar Metrakit Prorace cylinder |
| Beta | RR Alu Enduro 50 H2O 2T | 03-05 | Passar Metrakit Prorace cylinder |
| Beta | RR Alu Motard 50 H2O 2T | 03-05 | Passar Metrakit Prorace cylinder |
| Beta | RR Enduro 50 H2O 2T | 01 | Passar Metrakit Prorace cylinder |
| Beta | RR Motard 50 H2O 2T | 02-25 | Passar Metrakit Prorace cylinder |
| Beta | RR Motard Track 50 H2O 2T | 05-25 | Passar Metrakit Prorace cylinder |
| Beta | RR SM 50 H2O 2T | 01 | Passar Metrakit Prorace cylinder |
| CH Racing/Husqvarna | CH Racing 50 H2O 2T | 02-05 | Passar Metrakit Prorace cylinder |
| CH Racing/Husqvarna | SM 50 H2O 2T | 02-05 | Passar Metrakit Prorace cylinder |
| CH Racing/Husqvarna | WRE 50 H2O 2T | 01 | Passar Metrakit Prorace cylinder |
| CH Racing/Husqvarna | WSM 50 H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| CH Racing/Husqvarna | WSM 50 Replica H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| CH Racing/Husqvarna | WXE 50 H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| CH Racing/Husqvarna | WXE 50 Racing H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| CPI | Supercross SX50 | 05-15 | Passar Metrakit Prorace cylinder |
| CPI | Supermoto SM50 | 05-15 | Passar Metrakit Prorace cylinder |
| Fantic | Cabellero Casa 50 H2O 2T | 05-20 | Passar Metrakit Prorace cylinder |
| Fantic | Cabellero Motard 50 H2O 2T | 04-20 | Passar Metrakit Prorace cylinder |
| Fantic | Enduro TL 50 Casa H2O 2T (E4) | 17-20 | Passar Metrakit Prorace cylinder |
| Fantic | Enduro TL 50 Competition H20 2T (E4) | 17-20 | Passar Metrakit Prorace cylinder |
| Fantic | Enduro TL 50 Performance H20 2T (E4) | 17-20 | Passar Metrakit Prorace cylinder |
| Fantic | Enduro XE 50 Competition (E5) | 21-25 | Passar Metrakit Prorace cylinder |
| Fantic | Enduro XE 50 Performance (E5) | 21-25 | Passar Metrakit Prorace cylinder |
| Fantic | Motard TX 50 Casa H2O 2T (E4) | 17-20 | Passar Metrakit Prorace cylinder |
| Fantic | Motard TX 50 Competition H2O 2T (E4) | 17-20 | Passar Metrakit Prorace cylinder |
| Fantic | Motard TX 50 Performance H2O 2T (E4) | 17-20 | Passar Metrakit Prorace cylinder |
| Fantic | Motard XM 50 Competition H2O 2T (E5) | 21-25 | Passar Metrakit Prorace cylinder |
| Fantic | Motard XM 50 Performance H2O 2T (E5) | 21-25 | Passar Metrakit Prorace cylinder |
| Generic | Trigger SM | 06-16 | Passar Metrakit Prorace cylinder |
| Generic | Trigger X | 06-16 | Passar Metrakit Prorace cylinder |
| HM-Moto | CRE Baja Basic Enduro 50 H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| HM-Moto | CRE Baja Enduro 50 H2O 2T | 01 | Passar Metrakit Prorace cylinder |
| HM-Moto | CRE Baja RR Enduro 50 H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| HM-Moto | CRE Six Compétiton Enduro 50 H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| HM-Moto | CRE Six Enduro 50 H2O 2T | 01 | Passar Metrakit Prorace cylinder |
| HM-Moto | CRM Basic SM 50 H2O 2T | 09-20 | Passar Metrakit Prorace cylinder |
| HM-Moto | Derapage Compétiton SM 50 H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| HM-Moto | Derapage RR SM 50 H2O 2T | 06-20 | Passar Metrakit Prorace cylinder |
| HM-Moto | Derapage SM 50 H2O 2T | 03-20 | Passar Metrakit Prorace cylinder |
| HRD | Sonic II SM 50 H2O 2T | 04-08 | Passar Metrakit Prorace cylinder |
| HRD | Sonic II Trail 50 H2O 2T | 04-08 | Passar Metrakit Prorace cylinder |
| HRD | Sonic SM 50 H2O 2T | 99-03 | Passar Metrakit Prorace cylinder |
| HRD | Sonic Trail 50 H2O 2T | 99-03 | Passar Metrakit Prorace cylinder |
| HRD | Supermotard 50 H2O 2T | 99-20 | Passar Metrakit Prorace cylinder |
| HRD | Trail 50 H2O 2T | 09-20 | Passar Metrakit Prorace cylinder |
| Keeway | TX 50 Enduro | 09-17 | Passar Metrakit Prorace cylinder |
| Keeway | TX 50 SM | 09-17 | Passar Metrakit Prorace cylinder |
| Keeway | X-Ray 50 R | 07-10 | Passar Metrakit Prorace cylinder |
| Keeway | X-Ray 50 SM | 07-10 | Passar Metrakit Prorace cylinder |
| KSR Moto | TR 50 SM / X | 17-25 | Passar Metrakit Prorace cylinder |
| Malaguti | Drakon Naked 50 H2O 2T | 05-07 | Passar Metrakit Prorace cylinder |
| Malaguti | XSM SM 50 H2O 2T | 03-21 | Passar Metrakit Prorace cylinder |
| Malaguti | XTM Enduro 50 H2O 2T | 03-21 | Passar Metrakit Prorace cylinder |
| MBK | X-Limit SM 50 H2O 2T | 02-11 | Passar Metrakit Prorace cylinder |
| MBK | X-Limit Trail 50 H2O 2T | 97-11 | Passar Metrakit Prorace cylinder |
| MBK | X-Power 50 H2O 2T | 98-02 | Passar Metrakit Prorace cylinder |
| MBK | X-Power R 50 H2O 2T | 03-12 | Passar Metrakit Prorace cylinder |
| Motorhispania | Furia Enduro 50 H2O 2T | 97-04 | Passar Metrakit Prorace cylinder |
| Motorhispania | Furia Max Enduro 50 H2O 2T | 05-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | Furia Max SM 50 H2O 2T | 05-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | Furia SM 50 H2O 2T | 97-04 | Passar Metrakit Prorace cylinder |
| Motorhispania | RX 50 H2O 2T | 00-07 | Passar Metrakit Prorace cylinder |
| Motorhispania | RX-R 50 H2O 2T | 08-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | RYZ Enduro 50 H2O 2T | 02-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | RYZ Pro Enduro 50 H2O 2T | 03-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | RYZ Pro SM 50 H2O 2T | 03-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | RYZ Pro Urbanbike 50 H2O 2T | 07-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | RYZ SM 50 H2O 2T | 02-20 | Passar Metrakit Prorace cylinder |
| Motorhispania | RYZ Urbanbike 50 H2O 2T | 03-04 | Passar Metrakit Prorace cylinder |
| Peugeot | NK7 50 H2O 2T | 08-14 | Passar Metrakit Prorace cylinder |
| Peugeot | XP6 Enduro 50 H2O 2T | 97-12 | Passar Metrakit Prorace cylinder |
| Peugeot | XP6 SM 50 H2O 2T | 97-11 | Passar Metrakit Prorace cylinder |
| Peugeot | XP6 Top Road SM 50 H2O 2T | 05-11 | Passar Metrakit Prorace cylinder |
| Peugeot | XP6 Track Enduro 50 H2O 2T | 05-12 | Passar Metrakit Prorace cylinder |
| Peugeot | XP7 Top Road SM 50 H2O 2T | 11-14 | Passar Metrakit Prorace cylinder |
| Peugeot | XP7 Track Enduro 50 H2O 2T | 11-14 | Passar Metrakit Prorace cylinder |
| Peugeot | XPS Enduro 50 H2O 2T | 02-12 | Passar Metrakit Prorace cylinder |
| Peugeot | XPS SM 50 H2O 2T | 02-12 | Passar Metrakit Prorace cylinder |
| Peugeot | XPS Street 50 H2O 2T | 03-05 | Passar Metrakit Prorace cylinder |
| Peugeot | XPS Street EVO3 50 H2O 2T | 07-12 | Passar Metrakit Prorace cylinder |
| Peugeot | XPS Top Road SM 50 H2O 2T | 05-12 | Passar Metrakit Prorace cylinder |
| Peugeot | XPS Track Enduro 50 H2O 2T | 05-12 | Passar Metrakit Prorace cylinder |
| Peugeot | XR6 H2O 2T | 00-07 | Passar Metrakit Prorace cylinder |
| Peugeot | XR7 50 H2O 2T | 08-14 | Passar Metrakit Prorace cylinder |
| Rieju | MRT Euduro 50 H2O 2T | 09-25 | Passar Metrakit Prorace cylinder |
| Rieju | MRT Pro Enduro 50 H2O 2T | 09-20 | Passar Metrakit Prorace cylinder |
| Rieju | MRT Pro SM 50 H2O 2T | 09-20 | Passar Metrakit Prorace cylinder |
| Rieju | MRT SM 50 H2O 2T | 09-25 | Passar Metrakit Prorace cylinder |
| Rieju | MRX Enduro 50 H2O 2T | 01-03 | Passar Metrakit Prorace cylinder |
| Rieju | MRX Pro Enduro 50 H2O 2T | 04-08 | Passar Metrakit Prorace cylinder |
| Rieju | NKD 50 H2O 2T | 04-08 | Passar Metrakit Prorace cylinder |
| Rieju | NKD II 50 H2O 2T | 09-20 | Passar Metrakit Prorace cylinder |
| Rieju | RJ SM 50 H2O 2T | 99-01 | Passar Metrakit Prorace cylinder |
| Rieju | RJ Spike 50 H2O 2T | 00-03 | Passar Metrakit Prorace cylinder |
| Rieju | RR Automix 50 H2O 2T | 97-01 | Passar Metrakit Prorace cylinder |
| Rieju | RR SM 50 H2O 2T | 97-05 | Passar Metrakit Prorace cylinder |
| Rieju | RR Sport Enduro 50 H2O 2T | 02-05 | Passar Metrakit Prorace cylinder |
| Rieju | RRX SM 50 H2O 2T | 03-06 | Passar Metrakit Prorace cylinder |
| Rieju | RRX Spike SM 50 H2O 2T | 03-09 | Passar Metrakit Prorace cylinder |
| Rieju | RS1 Evolution 50 H2O 2T | 97-04 | Passar Metrakit Prorace cylinder |
| Rieju | RS2 Matrix 50 H2O 2T | 02-09 | Passar Metrakit Prorace cylinder |
| Rieju | RS3 50 H2O 2T | 10-20 | Passar Metrakit Prorace cylinder |
| Rieju | RS3 NKD 50 H2O 2T | 13-20 | Passar Metrakit Prorace cylinder |
| Rieju | SMX 50 H2O 2T | 01-08 | Passar Metrakit Prorace cylinder |
| Rieju | SMX Pro 50 H2O 2T | 04-07 | Passar Metrakit Prorace cylinder |
| Rieju | SMX Pro Street 50 H2O 2T | 06-08 | Passar Metrakit Prorace cylinder |
| Rieju | Spike 50 H2O 2T | 98-06 | Passar Metrakit Prorace cylinder |
| Rieju | Spike 50 X H2O 2T | 06-11 | Passar Metrakit Prorace cylinder |
| Rieju | Tango Motard 50 H2O 2T | 08-11 | Passar Metrakit Prorace cylinder |
| Rieju | Tango Trail 50 H2O 2T | 07-17 | Passar Metrakit Prorace cylinder |
| Sherco | HRD Enduro 50 H2O 2T (E1) | 99-05 | Passar Metrakit Prorace cylinder |
| Sherco | HRD SM 50 H2O 2T (E1) | 99-05 | Passar Metrakit Prorace cylinder |
| Sherco | SE Enduro 50 H2O 2T | 99-25 | Passar Metrakit Prorace cylinder |
| Sherco | SE Enduro Champion 50 H2O 2T | 08-25 | Passar Metrakit Prorace cylinder |
| Sherco | SM 50 H2O 2T | 99-25 | Passar Metrakit Prorace cylinder |
| Sherco | SM Panther 50 H2O 2T | 08-20 | Passar Metrakit Prorace cylinder |
| Sherco | SU Urban 50 H2O 2T | 08-17 | Passar Metrakit Prorace cylinder |
| Sherco | SU Urban Base 50 H2O 2T | 10-17 | Passar Metrakit Prorace cylinder |
| Sherco | SU Urban Champion 50 H2O 2T | 08-17 | Passar Metrakit Prorace cylinder |
| Viarelli | Enduro | 17-25 | Passar Metrakit Prorace cylinder |
| Viarelli | Motard | 17-25 | Passar Metrakit Prorace cylinder |
| Yamaha | DT50L SM H2O 2T -2 | 02 | Passar Metrakit Prorace cylinder |
| Yamaha | DT50R Enduro H2O 2T | 97-11 | Passar Metrakit Prorace cylinder |
| Yamaha | DT50X SM H2O 2T | 03-11 | Passar Metrakit Prorace cylinder |
| Yamaha | TZR50 H2O 2T | 98-99 | Passar Metrakit Prorace cylinder |
| Yamaha | TZR50R H2O 2T | 03-12 | Passar Metrakit Prorace cylinder |