British Spares

Classic British motorcycle parts for Norton, Triumph and BSA
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British Spares
 
Special Products > Engine / Gearbox 
Many more products like these are featured in our Special Products catalogue

Clutch Plates.

Clutch Plates

Triumph Triple / BSA Rocket III 

AP Racing No:57-3709
 

Triumph Twins, all & BSA Twins '56 on

7+1 Super Clutch Kit No:57-4763C
  Surflex No:57-4763D

Norton, early 750 

Barnett No:06-1339

Norton 850, late 750 

Barnett No:06-3741

Morgo Triumph Twin Big-Bore Kit - Triumph 650cc To 750cc Conversion. This is a conversion used by thousands of enthusiasts around the world allowing a Triumph 650cc unit or pre-unit motor to be increased to 750cc, when used with a 9 stud head, without modifying any of the standard parts. The cylinder barrel is a one-piece casting, with increased finning area for better cooling and weighing only a few ounces more than the standard barrel. All pistons have cutaways for larger valves; standard compression ratio is 9.5:1 with standard gasket. Oversize pistons & rings are available for this kit. Kit comprises: barrels, standard-sized piston assemblies & head gasket.

Triumph Twin Big-Bore Kit - Triumph 650cc To 750cc Conversion

Morgo Big-Bore Kit for Triumph 650 Twins No:70-6304BB

Cap Head Screw Sets

Cap Head Screw Sets. These chrome-plated cap head screw sets replace the original slotted screws for the engine & gearbox covers. They look great & are an improvement over slotted fasteners, which easily damage when tightened. Made from high tensile steel, each set contains the correct screw sizes & lengths for the selected bike & come complete with the relevant Allen key(s). For some models we also offer stainless steel sets for a really long-lasting, quality look ('SS' suffix to part number).

For a full list of available screw sets & prices, click here..


Metal Gaskets

These aluminium rocker box gaskets and thick copper head gaskets stabilise your engines "non moving" parts.

Strobe photography shows that rocker boxes walk significantly as they try to squash and squeeze inferior soft gasketsout from underneath. 1mm thick sheet alloy gaskets allow freshly surfaced parts to key into the surface.

Double thickness cylinder head gaskets are the answer if your parts have been surfaced to the point of raising compression to intolerable levels.

Metal Gaskets


 A
70-9348M 
Metal Rocker Box Gasket,Unit 650,1963-70
 B  71-3681T 2mm(.080") thick Copper Head Gasket, Tri 750 twins
 C  70-4547T 2mm(.080") thick Copper Head Gasket, Tri 9 stud 650 twins
 D 70-8773M Metal Rocker Box Gasket,Tri/BSA Triples
 E 71-2599M Metal Rocker Box Gasket,Tri Twins 1971-1987
 F 70-1650M Metal Rocker Box Gasket,Pre-Unit Tri 500  & Iron Head 650 Models
  70-3552M Metal Rocker Box Gasket,Pre-Unit Tri, Alloy Head 650 Models
 G 70-9511M Metal Rocker Box Gasket,Tri Unit Constr 350/500 Models





Many more products like these are featured in our free Special Products catalogue