Check the listing for details. MGB MGC Gearbox 22H1028 Synchro Ring Set 4 Synchro. Condition: New, Made in United Kingdom. Listed at 141.63 USD. The synchro rings we provide are hardened to meet OEM standards. These rings are a higher-priced option on the market, reflecting the superior materials used to ensure a precise fit and excellent quality. Autogear Transmissions Limited supplies only high-end top-quality performance bearings from the world’s best brands. We must ensure that our bearings deliver high-speed performance and durabilty in our rebuild/overhaul kits and source the best brand bearings at competitive prices. We have been trading on eBay since 2005 making us one of leading established transmission supplier on the platform. We have over 40 years of technical experience and knowledge. You can trust Autogear Transmissions to supply the highest quality parts needed for your transmission rebuild. *International Customers:.