Free shipping on qualifying gear orders $99+ • Easy returns
Contact 0 $0.00

Transmission

If your engine number is 179828 or lower

Triumph Speedmaster · Clutch & Transmission incl. Gearchange Mechanism · 30 parts

Exploded parts diagram — Transmission, Triumph Speedmaster

Open this diagram in the interactive viewer → Click any callout on the drawing to jump to the part.

Motorcycles this catalogue covers

Speedmaster 865
Choose your year

Our parts team checks fitment against your motorcycle before any order ships.

Every part on this diagram

1
T1180908
Input shaft and gear
Qty 1
1st
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
2
T1180901
Shaft output
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
3
T1181023
Gear input
Qty 1
2nd
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
4
T1181030
Gear input
Qty 1
3rd/4th
No date from Triumph yet
$161.95
On backorder Ask the parts desk
5
T1181053
Gear input
Qty 1
Top
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
6
T1181054
Bush
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
7
T1181111
Gear output
Qty 1
1st
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
8
T1181127
Gear output
Qty 1
2nd
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
9
T1181130
Gear output
Qty 1
3rd
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
10
T1181131
Bush
Qty 1
3rd/4th
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
11
T1181140
Gear output
Qty 1
4th
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
12
T1180902
Spacer
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
13
T1181160
Gear output
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
14
T3800006
Bearing, Needle, K25x32x16
Qty 2
Triumph has stock
$15.93
Order-in Ask the parts desk
15
T1180156
Sleeve Assy, Needle bearing
Qty 2
Triumph has stock
$58.98
Order-in Ask the parts desk
16
3800002-T0301
Bearing, Ball, DG2868 GN1C3
Qty 1
Triumph has stock
$40.29
Order-in Ask the parts desk
17
T3800196
Retaining Ring, Bearing
Qty 1
Low stock at Triumph
$4.56
Order-in Ask the parts desk
18
T3800132
Bearing, 30 x 62 x 16, DGB
Qty 1
No date from Triumph yet
$110.89
On backorder Ask the parts desk
19
T3800300
Snap Ring, Ext, 62 x 1.7
Qty 1
Triumph has stock
$3.32
Order-in Ask the parts desk
20
T1181188
Distance Sleeve
Qty 1
Triumph has stock
$3.81
Order-in Ask the parts desk
21
T1180175
Nut, Gearbox Sprocket
Qty 1
Triumph has stock
$5.15
Order-in Ask the parts desk
22
T1180181
Washer, Gearbox Sprocket
Qty 1
Triumph has stock
$7.00
Order-in Ask the parts desk
23
T1181585
Sprocket
Qty 1
16T
Triumph has stock
$31.88
Order-in Ask the parts desk
24
T3600068
Seal, Oil, 40 62 6, Clockwise
Qty 1
Triumph has stock
$10.91
Order-in Ask the parts desk
25
T1180281
Washer, Thrust, Input
Qty 2
Triumph has stock
$3.42
Order-in Ask the parts desk
26
T1180291
Washer thrust
Qty 3
Triumph has stock
$3.42
Order-in Ask the parts desk
27
T3500003
Circlip, 32mm Shaft
Qty 2
Triumph has stock
$6.50
Order-in Ask the parts desk
28
T3500202
Circlip
Qty 3
Triumph has stock
$5.19
Order-in Ask the parts desk
29
T3555005
Washer, 25.5 x 38 x 1.5
Qty 2
Triumph has stock
$3.42
Order-in Ask the parts desk
30
T3500201
Circlip, EXT, 23.5 x 1.2
Qty 2
Triumph has stock
$4.04
Order-in Ask the parts desk

Diagram and part data from Triumph’s own parts catalogue. Prices and availability are a dated snapshot, not a reservation. Fitment is Triumph’s data — send us the last six of your VIN if you want it checked before you order.

Southern California Motorcycles, 515 W Lambert Rd, Brea, CA 92821 · 714-256-6700

Triumph supply checked Aug 5, 2026 · Brea shelf Aug 18, 2026.