FOR RACE USE ONLY
The Vespa PX`98/MY/`11 models and all GRIMECA disc brakes are supplied with a simple cast brake calliper. As this component isn't exactly state-of-the-art we have manufactured a brake caliper which not only sets the pulse of any professional customizer racing, but also improves the braking effect of the disc brakes.
The SIP Performance brake calliper is CNC-milled completely from aluminium. The bigger piston diameter, totalling 31.5 mm, guarantees a better braking performance. We have also given the brake calliper a brake pad that has a bigger pad width and therefore a non-tilting bearing surface. Special additional inner drill-holes make the bleeding easier. The brake callipers are anodised and come in the extreme racing colours of silver, gold, black, titanium and red.
The brake calliper is a perfect match with the main brake cylinders PX`98 (part no. 56378800) with 12mm brake piston or GRIMECA (part no. 30060000) with 11mm brake piston. The semi-hydraulic GRIMECA Classic, NT or PX´98/MY disc brakes therefore take the step forwards into the new millennium! No modifications are necessary to the existing brake system. Simply replace the old brake calliper with the small 25/30mm brake pistons.
Conclusion: Update in terms of braking effect and visuals for the existing disc brakes.
SIP-TIP: Use new brake fluid! A Stahlflex (braided steel) brake hose rounds the picture off and gives an even more accurate pressure point. If you lose the ball bearing for the bleeder valve you require the packet seal (part no. 56409000).
Christian Rapf, ESC #41:
"I had to get a new component to make the brakes actually work. The SIP Brake calliper gave my old Grimeca Classic a new lease of life. On the first training for the ESC I was positively surprised. The brake performance was noticeably better, the pressure point very precise. The brake caliper is supplied via a Stahlflex hose and 11 series pump."
Tech-TiP Venting:
- Turn the brake calliper a couple of times during the venting
- In case of a semi-hydraulic transducer, disengage bowden cable in order to get the complete lever stroke
- Venting tool
-> Shoes are supposed to touch the disc
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