Suyog Rubber [India] Pvt. Ltd. Supplies Assembly Bush Rear Suspension. Suyog Rubber [India] Pvt. Ltd. Has achieved ISO 9001:2000 certification. Assembly Bush Rear Suspension is used to absorb and dampen vibration between leaf springs as well as Chassis to the floor bed. Assembly Bush Rear Suspension is located in the rear suspension of vehicles and in the eyes of the leaf spring. Assembly Bush Rear Suspension is used in Tata Sumo and Tata Mobile. Similar design is used in Mahindra & Mahindra and other vehicles.