【SIP PERFORMANCE】Disc Brake SIP PERFORMANCE RADIAL Classic NT “Classic Look” front front

silver
flat
Φ 20 mm
with SIP Sport Brake Disc，with RADIAL Brake Calliper silver，without Brake Master Cylinder/ Brake Calliper，without Brake Hose
homologation：TGA for Brake Calliper 5644 and Axle Seating 39072
Suspension SPORT - comfortable and Grade AA - first-class repair
Sturdy，torsion-resistant Brake Calliper in mono-block design
Very good braking performance and good modulation due to 4 Pistons
Homologation possible due to part type approval of Brake Calliper and Axle Seating
Classic look thanks to GRIMECA Brake Drum

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Radial high-performance Disc Brake in classic look for Vespa PK，PX，Lusso，T5 and oldies with Conversion Steering Column.
The best of both worlds：SIP Performance combines the 5644 radial front Brake Caliper with classic Grimeca disc brake parts - the result is the performance of the best radial brake and the reliability of proven Grimeca components.
High-performance brake
Proven quality and well-balanced scope of delivery
The qualities of the SIP radial brake caliper are unsurpassed and documented in videos，article descriptions and tests：one-piece “monobloc construction”，forged material and a load capacity increased by a factor of ten.
These are some of the key words in the resume of the 5644 Brake Calliper.
The “Disc Brake RADIAL Classic Look” kit combines the SIP Brake Calliper and its “SIP Axle Seating” bracket with the components of the Grimeca NT to create a complete front disc brake.
Mounted on the vehicle，the result is the familiar classic look with the “Brake Drum” on the left-hand side of the vehicle - and modern radial brake technology when viewed from the engine side.
Existing ring rims - whether Plate or tubeless - can continue to be used.
The surface of the drum-like Wheel Hub is optionally available with or without net-shaped Spokes.
Unlike the classic Grimeca complete kits，the radial Disc Brakes do not include semi-hydraulic master cylinders.
Instead，the additional purchase of a Brake Master Cylinder or brake pump is required.
We recommend the original Piaggio master cylinder pumps，which are approved for road use as standard due to their use in the PX98/MY Vespas.
Alternatively，SIP offers a brake pump CNC-milled in Germany，known from the custom scooter “Glorious Basterd”：It impresses with the same proven inner workings，but with a significantly higher-quality appearance and material quality.
The ultimate choice for many classic car riders：the compact Crimaz brake pumps (item no.
56375600)，based on the master cylinders of the Piaggio TPH.
They are so small that they are almost invisible under the Handlebar - ideal for anyone who wants to retain the classic vintage look.
There are two alternatives for the Brake Hose：Either buy a Spiegler hose - available in many suitable lengths and colors，with easy installation and an enclosed TUV Approval.
Or use the SIP Brake Hose Kit，whose Braided Steel Hose (Stahlflex) can be cut to any length，but is fitted “at your own Cap”.
As has long been the case with Grimeca components，there is currently no longer a valid TUV Approval.
Although the historical parts certificate is still available for download and the parts are so well established that many inspectors accept them without any problems，there is still a residual risk unless individual agreement has been reached with the relevant inspection body in advance.
For the SIP components Brake Calliper 5644 and Axle Seating 39072，a current Parts Type Approval (TTG) is included.
The TTG corresponds to the former German “Allgemeine Betriebserlaubnis” (ABE).
This means that all classic Vespas with standard Disc Brakes，such as the “PX 98” or “Millennium” models，have the right to be retrofitted with the SIP radial brake caliper.
Older Vespas also benefit from the TTG - it proves that the brake components can demonstrably withstand the characteristic loads of a Vespa.
As a result，individual approval is usually possible without any problems.
Disc Brakes can be fitted to classic cars by installing a PK-based SIP Conversion Steering Column.
These are available for all common frame designs：
Smallframe (Vespa 50-125/PV/ET3)
Largeframe VNA-VBB
GL / Super / Sprint / Rally Art.
no.
13337130
Unfortunately，there is recurring customer feedback that the studs of the “Brake Drum GRIMECA” turn when the wheel nuts are tightened - i.e.
they turn out on the back of the drum.
If they are not screwed in correctly，the studs may collide with parts of the brake.
GRIMECA studs can be secured in advance using the SIP stud screwing tool and high-strength Thread Locker.
The SIP Stud Kits are even better：They are available in three lengths so that there is always enough free thread length available - even with aluminum rims，wide tires and wheel spacers.
An industrial screw locking agent is already applied，and installation is easy with a hexagon socket.
Conclusion：Power is nothing without control！
4-piston radial brake caliper in monobloc design
Forged aluminium with anodized surface
Spare parts and special tools available
Axle Seating made from high-quality material using the die-casting process
SIP Sport Brake Disc included in the kit
Banjo Bolt M10 × 1.0 mm，Sealing Rings and fixing material included in the scope of delivery
Detailed Mounting Instructions available for download
Approval documents according to StVZO largely available (see downloads)
Please select and order Brake Hose and Brake Master Cylinder separately！
Air-operated bleeding tool makes working on Vespa brakes child’s play.
order 90° Banjo and Brake Hose separately.
SIP recommends the SIP CNC “Made in Germany” Brake Master Cylinder .
It has the same inner workings as the original spare part (information for the TUV).
“In terms of braking power and modulation - they are top.
At no time have we ever had to say that they were getting doughy or that the braking power was diminishing.
We will definitely continue to use the brakes.
“
-Mike Betz and Team-Germany-111，after the 24-hour race 2025 in Zuera

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適合車種： 100 (UK)／100 Sport (US)、125、125 (T1／125) (D)、125 (T2／125) (D)、125 CL、125 GTR、125 GT／125 Sprint、125 N、125 Primavera、125 Primav... ( 対応モデルを見る )