An 88mm outside diameter alloy bend for large-scale induction and charge-air fabrication. This is specialist territory: big single-turbo intercooler plumbing, large intake and airbox ducting, and high-flow applications where anything smaller becomes the restriction. At this diameter every millimetre of routing matters, so mock the path up before committing to cuts, and be realistic about bonnet and cooling pack clearance. Deburr the cut ends, join with correctly sized silicone couplers and use clamps appropriate to the load. Large pipework carries real mass and leverage, so it must be positively bracketed to the chassis or engine rather than supported by the hose joints.