Lijia SL4105 Air and Exhaust parts.
One piece required per exhaust port. 70mm bolt centres. 40mm x 33mm throat.
One piece required per intake port. 90mm bolt centres. 48mm x43mm throat.
Bottom outlet. 70mm head bolt centres at 130mm spacings. 54mm x 60 mm (4) bolt centres to exhaust pipe. Cast iron construction.
Side rear outlet. 70mm head bolt centres at 130mm spacings. 54mm x 60 mm (4) bolt centres to exhaust pipe. Cast iron construction.