Compatible: Piaggio Zip SP (front axle), Vespa Sprint, Vespa Primavera and classic Vespa Smallframe models (e.g. V50, PV, ET3, PK) in conjunction with Piaggio Zip SP fork or POLINI fork conversion with radial mount.
The Ottopuntouno Hurricane brake caliper kit significantly improves the front brake of Piaggio Zip SP, Vespa Sprint and Vespa Primavera and can also be used on classic Vespa Smallframe models if a Piaggio Zip SP fork or a POLINI fork with radial mount is fitted. Radial 4-piston technology, steel flex lines and MC-11 brake pump ensure very powerful, stable deceleration for racing and trackday use.
Radial 4-piston brake calliper MC-11 pump Ø 11 mm Braided steel brake line Sport sintered pads Made in Italy
At the heart of the kit is the 8.1 Avional CNC 4-piston brake calliper from OTTOPUNTOUNO. The radial screw connection and the piston geometry ensure a significantly higher possible braking force than the original two-piston caliper and give the rider very direct feedback at the lever. In conjunction with the MC-11 brake pump with 11 mm pistons, the result is a compact but powerful system for sporty use.
On Zip SP, Vespa Sprint and Vespa Primavera, the kit shows its strengths on the race track and at trackdays. In classic Smallframe conversions, where a Piaggio Zip SP fork or a POLINI fork is already fitted, the same braking performance can be transferred to the V50, PV, ET3 or PK. This adapts the front brake of old smallframe vehicles to the performance level of modern engines.
The design of the Hurricane brake calliper is based on the familiar FORMULA 4-piston technology and implements it with its own radially mounted housing. The two halves of the housing, CNC-milled from Avional/Ergal aluminium, are bolted together and then anodized. The result is a very rigid caliper with four Ø 24 mm pistons, which securely guides sintered sport pads and remains stable even at high friction values.
The Hurricane uses a hole spacing of 83.4 mm for the connection to the fork and adapter. The design differs from conventional aftermarket saddles, which is why adapters or axle mounts for Stage6 and comparable saddles are generally not compatible. Suitable OTTOPUNTOUNO adapters or fork mounts for radial calipers should be used.
In the classic Vespa Smallframe scene, conversions to Piaggio Zip SP forks or POLINI forks are common in order to use modern brake and suspension components on V50, PV, ET3 or PK. This is exactly where the Hurricane brake caliper kit comes in: If a Zip SP or POLINI fork with radial mount and matching adapter is installed, the radial 4-piston caliper can also be used on classic smallframe models.
This allows the front axle of old Vespa Smallframe scooters to be brought to a braking level that matches the engine power of heavily tuned or racing engines. The prerequisites are correct fork assembly, a suitable brake disk and professional installation of the brake system, including careful bleeding.
The brake caliper kit is put together in such a way that the essential components of the brake system come from a single source. It includes the OTTOPUNTOUNO Hurricane 4-piston brake calliper, a right-axis MC-11 pump with 11 mm piston, a braided steel flex hose, an anodized Ergal bracket, M8x1 connecting bolts, matching O-rings and M8 fixing bolts.
An M8-10 reducer connection is also included if a standard line with a 10 mm connection is to be used. This means that the kit can be combined with standard handlebar pumps with an M10 thread, provided they are used for racing.
The Hurricane brake caliper kit is a motorsport product and is expressly intended for competition and the race track. The combination of radial caliper, sports sintered pads and steel flex line is designed for maximum braking performance and temperature stability. Use on public roads is not intended and is exclusively at your own risk.
The OTTOPUNTOUNO Hurricane brake caliper kit is a logical solution for anyone looking for a very powerful front brake on Zip SP, Vespa Sprint, Vespa Primavera or classic smallframe conversions with Zip SP or POLINI forks. Radial 4-piston caliper, MC-11 pump and steel flex line deliver powerful, easily controllable braking power - exactly what is needed on the racetrack.