and production
of braking system fittings
for industrial vehicles

ISO 14001 Environmental Certification

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TOSI F.lli – SIRIT has obtained ISO 14001 Environmental Certification. We are proud of this result and want to share it with all partners connected to us.


Andrea Tosi is the new CEO of Tosi F.lli s.r.l.


We are pleased to inform you that the Shareholders’ Meeting, which met on 29 June 2021, unanimously approved the appointment of Andrea Tosi as Chief Executive Officer and Chairman of the Board of Directors. The outgoing Managing Directors Tosi Renzo and Tosi Mario, by virtue of the contribution made to the company which is decisive […]



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Tosi F.lli is pleased to announce the engineering of an environmental Oring on all RTC push-in models adding further protection from dust, dirt, salt and other polluting agents. This important upgrade brings our product to the highest performance and safety standards. A state-of-the-art level that guarantees the best possible available push-in solution for Air Brake […]



Our production fittings are manufactured through a CAD 3D software planning and according to the Clients’ needs. All new products are prototyped and monitored during the production phase and then tested according to the Iveco Standard 18-2715 rules in order to comply with TÜV requirements. The items are obtained from bar and mould with the support of hi-tech machines. On client’s request, various thermal treatments are available internally while the galvanic treatments are carried out externally. The finished fittings are then 100% re-tested by specialized personnel.

Braking System Fittings

SIRIT braking system fittings are manufactured according to the DIN 2353 regulation. The wide range offers many solutions for truck, trailer and semitrailer manufacturers up to transformers and spare part dealers.

Recoverable Fittings Air Brake Systems

The SIRIT-RTC quick-connect fitting is designed for use with 11/12 (Rilsan), 10/12 polyamide pipes or elastomeric polyester (Hyltrel). TOSI-SIRIT has designed a single fitting able to retrieve the pipe after insertion through the RTC TOOL.