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Countershaft -DRT Gear Flame - short fourth gear - Vespa V50, PV125, ET3, PK50, PK80, PK125 S-XL - 10-14-18-21 teeth (used with genuine gear wheels)

partnumber 3330000

The DRT countershaft is intended to replace the no longer available short fourth gear cogwheel with 48 teeth from DRT. The desired shortening of the transitional jump between the third and fourth gear is now reached on a revised sub-shaft in conjunction with the original gear wheels. This combination is stronger than the previously used gearwheel with 48 teeth / original countershaft combination.
The fourth gear is now, compared to the individual DRT gear wheel, become a bit shorter:
Single speed DRT cog wheel before: 22/48 (2:18)
New DRT Countershaft with orig. 4 speed gear: 21/48 (2:19)
The new countershaft has now a nut with an M11 thread to enable a higher tightening torque for the clutch.
The new DRT countershaft is ideal for sports gear motors to jump between the third and fourth gear easier. A good speed connection is also be ensured, even if an exhaust system with little torque at low engine speeds is used.

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