Malossi HTQ 17/49 Secondary Transmission Gear Kit suitable for a range of 125cc and 200cc scooters fitted with the Piaggio Leader 4-stroke, 4-valve engine. The Malossi HTQ 17/49 provides a longer ratio allowing for higher top end speed. Suitable for the following models: (Please refer to your VIN number or contact us directly if you are unsure of compatibility) Aprilia-SR Max 125 ie 4V 11-14 [ZAPM357/ ZD4M357] Aprilia-Scarabeo 125 4V 03 (Piaggio engine) [ZD4TD000/ TDA00/ TDA01] Aprilia-Scarabeo 125 4V 04-06 (Piaggio engine) [ZD4TD002/ TDB/ TDC] Aprilia-Scarabeo 125 4V 06- (Piaggio engine) [ZD4TD005/ TDA03] Aprilia-Sport City 125 4V 04-06 E2 [ZD4VB00] Aprilia-Sport City 125 4V 06-08 E3 [ZD4VB002] Aprilia-Sport City 200 4V 04-06 E2 [ZD4VBA00] Aprilia-Sport City 200 4V 06-08 E3 [ZD4VBA01] Derbi-Rambla 125 4V LC 08-09 E3 [VTHRA1A] Gilera-Nexus 125 ie 4T 4V 08- [ZAPM35700] Gilera-Nexus 125 ie 4T 4V 09-10 [ZAPM35700] Piaggio-BV 200 4V -04 (NAFTA) [ZAPM28900] Piaggio-BV 200 4V 05- (NAFTA) [ZAPM289L] Piaggio-Beverly 125 4V 02-05 (Carburettor) [ZAPM281000] Piaggio-Beverly 125 4V 05-06 (Carburettor) [ZAPM28400] Piaggio-Beverly 125 4V 07-08 (Carburettor) [ZAPM28900] Piaggio-Beverly 125 4V RST 04-06 (Carburettor) [ZAPM28400] Piaggio-Beverly 125 4V Sport 07-08 (Carburettor) [ZAPM28900] Piaggio-Beverly 125 4V Tourer 07-10 (Carburettor) [ZAPM28901] Piaggio-Beverly 200 4V (Carburettor) [ZAPM28200] Piaggio-Carnaby 125 4V 07-10 E3 [ZAPM60200] Vespa Modern-GTS 125 ie Super 4V 09-16 ABS/ o. ABS E3 [ZAPM4530]