We believe top-quality aftermarket swing reduction gearboxes shouldn't cost the earth! That’s why we’re proud to offer a cost-effective alternative to expensive OEM swing gearboxes — PROSUNG, designed for excavators of all sizes. PROSUNG slew boxes are built to OEM specification and come with a minimum 12 month, unlimited use warranty.
PROSUNG excavator swing reducers are manufactured for compatibility to all major construction brands including Caterpillar, Doosan, Hyundai, Kobelco, Volvo, Kubota, Takeuchi & More and offer a great alternative to buying Genuine & OEM reduction gearboxes.
We understand the cost implications of machine downtime so we hold stock of over 600 PROSUNG gearboxes in the UK, meaning we can get you back up and running the very same day!
Why Choose PROSUNG Swing Gearboxes?
✅ OEM Specification – Built to match the original manufacturer's specifications, ensuring seamless compatibility and reliable performance.
✅ 12-Month Unlimited Use Warranty – Complete peace of mind with every purchase.
✅ Wide Compatibility – Our swing reducers are manufactured to work with leading construction brands, including Doosan, Hyundai, Kobelco, Volvo, JCB, CAT, Komatsu, Hitachi, Case, and more.
✅ Massive UK Stock – With over 600 PROSUNG gearboxes in stock, we minimize downtime by offering same-day dispatch for immediate replacement.
Need assistance? Call or email our knowledgeable team to get back working!