Billet Performance Products tailshaft adapters convert the factory Toyota 3-bolt flange to a stronger 1350 series 4-bolt pattern on JZZ30 and JZA80 driveline setups. They are a proven driveline upgrade for gearbox swaps, custom tailshafts and higher-power street or motorsport cars where the standard flange becomes a limitation. Instead of modifying the existing flange, these adapters provide a cleaner conversion point for a stronger tailshaft arrangement. This product includes the size options used across different Toyota applications. The small adapter suits roughly 90mm bolt-hole spacing, while the large adapter suits roughly 100mm spacing, so measure your original flange before ordering. FEATURES MPN: BPP1014 Vehicle fitment: Toyota JZZ30 Soarer and JZA80 Supra Conversion: Factory 3-bolt / 3-finger flange to 1350 series 4-bolt Material: 7000 series alloy Included: High-tensile bolts Variants: Small and Large adapter sizes available TYPICAL APPLICATIONS Toyota gearbox and tailshaft conversions High-power street and drag driveline upgrades Custom one-piece or upgraded tailshaft builds Supra, Soarer and related Toyota driveline projects FITMENT NOTES Large adapter suits JZA80 Turbo 6-speed and auto applications Small adapter suits non-turbo JZA80, JZZ30 Soarer and Aristo applications Measure the distance between two flange bolt holes before ordering: approximately 90mm small or 100mm large Intended for Toyota applications that start with the factory 3-bolt flange arrangement