PLEASE NOTE: Delays in processing orders. Orders placed between Thursday 22 January and Monday 09 February will be processed 10 February.
Valve cups (bottom collar) for Inlet and exhaust valve, for Norton twins (each). 4 required per engine. If using head overahaul kit 050274 or valve guide 063527 this will Suit Norton 500/600/650/750/850 Twins 1949-75 & Matchless 750 G15 1964-68 with Norton engine NOS steel bottom valve spring cup (4 reqd). ID: 0.630" (bore); Thicknesss 0.15"; OD 1.35" otherwise use valve seat 067545 with 0.705inch bore for early guides. Original Norton part numbers: D12/148; T186; T2073; 06-1399; 061399 - valve collars/ valve spring cup bottom
