Malossi HTQ Secondary Gearbox 15/41 – longer ratio for Piaggio Leader engines

When you increase your engine's power through modification or the installation of a tuning cylinder, this can often lead to a higher top speed – however, only if the gear ratio is appropriate. The original final drives are usually chosen so that the stock engine can pull them without problems. But as soon as more hp is available, the engine quickly screams "dead" at higher speeds: the RPM increases sharply, but the top speed hardly increases.

This is exactly where the Malossi HTQ Secondary Gearbox 15/41 comes in: the gears and intermediate shafts are crafted to a first-class standard and help you bring the final RPMs to a bearable level – while simultaneously increasing the top speed significantly.

And don't worry about the old wives' tales that a longer gearbox would ruin the acceleration: usually, slightly harder clutch springs are enough to compensate for this. On the contrary – if the gearbox is too short for the available horsepower, you are wasting valuable power because the engine could actually pull more.

Advantages / Features

• Longer final ratio (15/41) for more Vmax potential with tuned setups
• Reduces high final RPMs at higher speeds
• First-class workmanship of gears and intermediate shafts
• Helps to better convert existing engine power into speed
• Starting behavior remains good in practice – usually easily balanced with slightly harder clutch springs

Technical Details

• Type: Secondary Gearbox
• Ratio: 15/41
• Version: Malossi HTQ
• Engine base: Piaggio Leader engines
• OEM No. (for comparison purposes only): 6712067

Compatibility (Vehicles)

Fits many vehicles with Piaggio Leader engines – e.g. models from Piaggio, Vespa and Aprilia, but also others.

Summary

• Ideal if your engine has more power due to a tuning cylinder/setup and the stock ratio is too short
• Lower RPM at the end, in exchange for more actual top speed
• OEM comparison number: 6712067