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Front Forks and Yokes

Triumph Thunderbird & Thunderbird Sport · Front Suspension/Steering/Clutch Master Cylinder · 28 parts · 1 on the shelf in Brea

Exploded parts diagram — Front Forks and Yokes, 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
T2042857
Stanchion assembly
Qty 1
LH
No longer supplied by Triumph
$726.39
Not on our shelf Ask the parts desk
2
T2042858
Stanchion assembly
Qty 1
RH
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
3
T2045081
Tube outer
Qty 1
LH
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
3
T2045080
Tube outer
Qty 1
RH
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
4
T2045085
Slider
Qty 2
Triumph has stock
$13.64
Order-in Ask the parts desk
5
2040077-T0301
Washer
Qty 2
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
6
2040078-T0301
Oil seal
Qty 2
Triumph has stock
$19.44
Order-in Ask the parts desk
7
2040079-T0301
Ring snap
Qty 2
$6.33
In stock in Brea Ask the parts desk
8
2040080-T0301
Dust seal
Qty 2
Triumph has stock
$18.60
Order-in Ask the parts desk
9
T2042020
Oil lock
Qty 2
Triumph has stock
$5.83
Order-in Ask the parts desk
10
T2045082
Tube assembly
Qty 2
Inner
Triumph has stock
$475.29
Order-in Ask the parts desk
11
T2045084
Cylinder assembly
Qty 2
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
12
T2020472
Circlip, M'cyl, Rear
Qty 2
Triumph has stock
$2.53
Order-in Ask the parts desk
13
T2045086
Spring
Qty 2
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
14
2040082-T0301
Washer spring
Qty 2
PART NO LONGER AVAILABLE
No longer supplied by Triumph
$1.04
Not on our shelf Ask the parts desk
15
T2040081
O Ring, Fork Seal
Qty 2
Triumph has stock
$3.32
Order-in Ask the parts desk
16
2040071-T0301
Top cap
Qty 2
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
17
2040075-T0301
Capscrew
Qty 2
PART NO LONGER AVAILABLE
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
18
2040074-T0301
Sealing washer
Qty 2
Triumph has stock
$1.05
Order-in Ask the parts desk
19
T2040860
Yoke
Qty 1
Upper
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
20
T2040060
Nut
Qty 1
Triumph has stock
$22.99
Order-in Ask the parts desk
21
T2040061
Washer Upper Yoke
Qty 1
Triumph has stock
$6.61
Order-in Ask the parts desk
22
T3050132
Screw, Skt Hd, Ss
Qty 6
M8 x 25mm
Triumph has stock
$3.24
Order-in Ask the parts desk
23
T2140210
Adjuster Nut, Upper
Qty 1
Triumph has stock
$3.14
Order-in Ask the parts desk
24
T2040259
Cover, Headstock Assy
Qty 1
Lower
No date from Triumph yet
$22.53
On backorder Ask the parts desk
25
T2042843
Lower Yoke Assy
Qty 1
Lower
No longer supplied by Triumph
$419.79
Not on our shelf Ask the parts desk
26
T3450060
Cap
Qty 1
Triumph has stock
$1.30
Order-in Ask the parts desk
27
T3050130
Capscrew, M8 x 40
Qty 2
Triumph has stock
$7.05
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.