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Transmission

Triumph Bonneville · Clutch & Transmission incl. Gearchange Mechanism · 31 parts

Exploded parts diagram — Transmission, Triumph Bonneville

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

Motorcycles this catalogue covers

Bonneville T100
2008–2026
Bonneville T120
2016–2026
Bonneville T120 Black
2020–2026

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

Every part on this diagram

1
T1180042
Shaft, Input & 1st Gear
Qty 1
Triumph has stock
$288.70
Order-in Ask the parts desk
2
T1180048
Shaft, Output
Qty 1
Triumph has stock
$232.39
Order-in Ask the parts desk
3
T1180031
Gear, 2nd, Input
Qty 1
Triumph has stock
$64.23
Order-in Ask the parts desk
4
T1180032
Gear, 3rd & 4th, Input
Qty 1
Triumph has stock
$161.95
Order-in Ask the parts desk
5
T1180033
Gear, Top, Input
Qty 1
Triumph has stock
$123.22
Order-in Ask the parts desk
6
T1180034
Bush, Splined, Top, Input
Qty 1
Triumph has stock
$65.14
Order-in Ask the parts desk
7
T1180045
Gear Assy, 1st Output
Qty 1
Triumph has stock
$140.84
Order-in Ask the parts desk
8
T1180047
Gear Assy, 2nd, Output
Qty 1
Triumph has stock
$137.32
Order-in Ask the parts desk
9
T1180037
Gear, 3rd, Output
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
10
T1180038
Bush, Splined, 3rd/4th, Output
Qty 1
Triumph has stock
$46.64
Order-in Ask the parts desk
11
T1180039
Gear, 4th, Output
Qty 1
Triumph has stock
$95.04
Order-in Ask the parts desk
12
T1180043
Spacer, Dogged, Output
Qty 1
Triumph has stock
$73.03
Order-in Ask the parts desk
13
T1180041
Gear, Top, Output
Qty 1
Triumph has stock
$128.47
Order-in 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
T1182000
Sprocket, Gearbox (18T)
Qty 1
If your engine number is 695707 or lower
Triumph has stock
$34.05
Order-in Ask the parts desk
23
T1182003
Sprocket, Gearbox (18T)
Qty 1
If your engine number is 695708 or higher
No date from Triumph yet
$34.05
On backorder 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
T1180049
Washer, Thrust, 41 OD x 1
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.