Speed 20 SA & SB Diff Parts
Bearing retainer for pinion shafts, crack tested £35
Pinion gear drive flange. Good internal splines & return scroll £45
30mm pinion double-row bearing, unused (impossible to find) £125
For any 1930’s diff units
1 set of 4 diff gears & crosshaft £60
1 pair halfshaft planet gears £30
3/8 BSF retaining studs x 6. New £10
Speed 20 SC
Pinion shaft oil seal £10
1 set of 8 diff cage nuts & castle nuts. Crack tested. £30
1 set of 8 castle nuts 3/8BSF £10
1 set of 4 diff unit retainer long studs 7/16BSF £10
Selection of brass shims for cw&p for 30&35mm diffs £50
Speed 25 or 4.3
35mm cw&p 3:8:1 ratio. UNUSED £1,650
Loc 335 pinion thrust bearing, Hoffman 35mm UNUSED £135
Pinion bearing retaining slotted nuts N12330 with special washers £25
4.1 crownwheel & pinion. Minimal wear £295
Diff cage assy – crosshaft, sunwheels, new thrust washers, halfshaft planet wheels
and split cages, superb bolts & castle nuts £125
Pinion drive flange, pinion bearing spacer & bearing housings £125
Cylinder Head. Rebuilt. New valves & guides. Valve springs, clusters & caps in
matched pairs. 1 set of collets & enough 1/2BSP threaded bar for all the core plugs £1,750
BTH Changeover switch 1929 onwards. Perfect condition. £275
Changeover switch mounting bracket, bronze type for mounting above mag £50
1 BTH JD6 magneto internal splined drive gear. 10 teeth. Unused. £100
Speed 20 SC/SD & Speed 25/4.3
1 complete set of I.F.S. bellcrank pins, sleeves & bushes, slotted nuts, washers
split pins & grease nipples. Unused. Absolute bargain. £350
Lucas starter motor nose cone with bush. No cracks. Very good. £100
Model unknown – Late Silver Eagle?
Complete rocker assy. Blasted & clean, only 0.003 wear on dia of rockershaft.
Dim of rocker arm from centre of bore to centre of valve tip rad – exhaust short 39mm
To ball adjuster 28mm
10” Kenlowe Fan Kit, new and unused. £100
Contact details can be found in the April 2026 Calendar
Bearing retainer for pinion shafts, crack tested £35
Pinion gear drive flange. Good internal splines & return scroll £45
30mm pinion double-row bearing, unused (impossible to find) £125
For any 1930’s diff units
1 set of 4 diff gears & crosshaft £60
1 pair halfshaft planet gears £30
3/8 BSF retaining studs x 6. New £10
Speed 20 SC
Pinion shaft oil seal £10
1 set of 8 diff cage nuts & castle nuts. Crack tested. £30
1 set of 8 castle nuts 3/8BSF £10
1 set of 4 diff unit retainer long studs 7/16BSF £10
Selection of brass shims for cw&p for 30&35mm diffs £50
Speed 25 or 4.3
35mm cw&p 3:8:1 ratio. UNUSED £1,650
Loc 335 pinion thrust bearing, Hoffman 35mm UNUSED £135
Pinion bearing retaining slotted nuts N12330 with special washers £25
4.1 crownwheel & pinion. Minimal wear £295
Diff cage assy – crosshaft, sunwheels, new thrust washers, halfshaft planet wheels
and split cages, superb bolts & castle nuts £125
Pinion drive flange, pinion bearing spacer & bearing housings £125
Cylinder Head. Rebuilt. New valves & guides. Valve springs, clusters & caps in
matched pairs. 1 set of collets & enough 1/2BSP threaded bar for all the core plugs £1,750
BTH Changeover switch 1929 onwards. Perfect condition. £275
Changeover switch mounting bracket, bronze type for mounting above mag £50
1 BTH JD6 magneto internal splined drive gear. 10 teeth. Unused. £100
Speed 20 SC/SD & Speed 25/4.3
1 complete set of I.F.S. bellcrank pins, sleeves & bushes, slotted nuts, washers
split pins & grease nipples. Unused. Absolute bargain. £350
Lucas starter motor nose cone with bush. No cracks. Very good. £100
Model unknown – Late Silver Eagle?
Complete rocker assy. Blasted & clean, only 0.003 wear on dia of rockershaft.
Dim of rocker arm from centre of bore to centre of valve tip rad – exhaust short 39mm
To ball adjuster 28mm
10” Kenlowe Fan Kit, new and unused. £100
Contact details can be found in the April 2026 Calendar
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