# Allison Transmission secures phase two contract for Firtina howitzer transmissions

Allison Transmission has secured a phase two contract with Turkish manufacturer HST Otomotiv to supply 32 X1100-5A4 cross-drive transmissions for the Next Generation T-155 Firtina 155 mm self-propelled howitzer. Deliveries are scheduled to begin in Q1 2026.

- Type: Contract
- Announced: 2025-02-13
- Where: Türkiye
- Status: announced
- Products: X1100-5A4 cross-drive transmissions
- Sectors: [Automotive Components](https://endata.com/sectors/automotive-components.md)

## Companies

- [Allison Transmission](https://endata.com/companies/15167.md) (supplier)
- [HST Otomotiv](https://endata.com/companies/82930.md) (customer)

## Sources

- [defence-industry.eu](https://defence-industry.eu/allison-secures-phase-two-contract-to-supply-x1100-5a4-transmissions-for-turkish-firtina-howitzers/), 2025-02-13: "Allison Transmission has announced the continuation of its partnership with Turkish manufacturer HST Otomotiv."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.