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Transmission

If your engine number is 107969 or higher

Triumph Thunderbird & Thunderbird Sport · Clutch & Transmission incl. Gearchange Mechanism · 32 parts

Exploded parts diagram — Transmission, Triumph Thunderbird & Thunderbird Sport

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

Motorcycles this catalogue covers

Thunderbird & Thunderbird Sport
1999

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

Every part on this diagram

1
T1180156
Sleeve Assy, Needle bearing
Qty 1
Triumph has stock
$58.98
Order-in Ask the parts desk
2
T3500201
Circlip, EXT, 23.5 x 1.2
Qty 1
Triumph has stock
$4.04
Order-in Ask the parts desk
3
T3800006
Bearing, Needle, K25x32x16
Qty 2
Triumph has stock
$15.93
Order-in Ask the parts desk
4
T3555005
Washer, 25.5 x 38 x 1.5
Qty 2
Triumph has stock
$3.42
Order-in Ask the parts desk
5
T1180542
Gear input
Qty 1
2nd
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
6
T1180546
Gear input
Qty 1
6th
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
7
T1180775
Bush
Qty 1
Splinded
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
8
T3500003
Circlip, 32mm Shaft
Qty 2
Triumph has stock
$6.50
Order-in Ask the parts desk
9
T1180543
Gear input
Qty 1
3rd/4th
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
10
T1180281
Washer, Thrust, Input
Qty 2
Triumph has stock
$3.42
Order-in Ask the parts desk
11
T1180525
Gear input
Qty 1
5th
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
12
T1180541
Input shaft and gear
Qty 1
No date from Triumph yet
$257.04
On backorder Ask the parts desk
13
3800002-T0301
Bearing, Ball, DG2868 GN1C3
Qty 1
Triumph has stock
$40.29
Order-in Ask the parts desk
14
1180160-T0301
Distance Sleeve
Qty 1
PART NO LONGER AVAILABLE
No longer supplied by Triumph
$1.67
Not on our shelf Ask the parts desk
15
T3800132
Bearing, 30 x 62 x 16, DGB
Qty 1
No date from Triumph yet
$110.89
On backorder Ask the parts desk
16
T1180550
Shaft output
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
17
T1180532
Gear output
Qty 1
2nd
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
18
T1180291
Washer thrust
Qty 3
Triumph has stock
$3.42
Order-in Ask the parts desk
19
T3500202
Circlip
Qty 3
Triumph has stock
$5.19
Order-in Ask the parts desk
20
T1180556
Gear output
Qty 1
6th
Triumph has stock
$151.38
Order-in Ask the parts desk
21
T1180554
Gear output
Qty 1
4th
Triumph has stock
$110.89
Order-in Ask the parts desk
22
T1180776
Bush
Qty 1
Splinded
Triumph has stock
$54.55
Order-in Ask the parts desk
23
T1180553
Gear output
Qty 1
3rd
Triumph has stock
$114.40
Order-in Ask the parts desk
24
T1180555
Gear output
Qty 1
5th
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
25
T1180531
Gear output
Qty 1
1st
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
26
1180130-T0301
Bearing sleeve
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
27
T3800300
Snap Ring, Ext, 62 x 1.7
Qty 1
Triumph has stock
$3.32
Order-in Ask the parts desk
28
T3800196
Retaining Ring, Bearing
Qty 1
Low stock at Triumph
$4.56
Order-in Ask the parts desk
29
T3600112
Oil seal
Qty 1
Triumph has stock
$10.49
Order-in Ask the parts desk
30
T1180177
Sprocket Gearbox, 18 T
Qty 1
Triumph has stock
$34.05
Order-in Ask the parts desk
31
T1180181
Washer, Gearbox Sprocket
Qty 1
Triumph has stock
$7.00
Order-in Ask the parts desk
32
T1180175
Nut, Gearbox Sprocket
Qty 1
Triumph has stock
$5.15
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.