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Front Forks and Yokes

Triumph lists this for more than one model — we will check it against your VIN

Triumph Thunderbird & Thunderbird Sport · Front Forks & Yokes · 33 parts

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
T2042841
Stanchion assembly
Qty 1
LH
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
2
T2042842
Stanchion assembly
Qty 1
RH
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
3
T2042922
Tube outer
Qty 1
LH
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
3
T2042921
Tube outer
Qty 1
RH
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
4
T2045862
Guide, Bush
Qty 2
Triumph has stock
$11.62
Order-in Ask the parts desk
5
T2046246
Seal, Spacer
Qty 2
No date from Triumph yet
$5.54
On backorder Ask the parts desk
6
T2042894
Oil seal
Qty 2
No date from Triumph yet
$19.78
On backorder Ask the parts desk
7
T2046248
Stop Ring
Qty 2
Triumph has stock
$6.33
Order-in Ask the parts desk
8
T2042897
Dust seal
Qty 2
* PART NO LONGER AVAILABLE *
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
9
T2042906
Oil lock
Qty 2
Triumph has stock
$9.52
Order-in Ask the parts desk
10
T2042888
Fork Leg Piston Ring
Qty 2
Triumph has stock
$9.43
Order-in Ask the parts desk
11
T2042923
Cylinder assembly
Qty 2
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
12
T2042920
Tube assembly
Qty 2
Inner
Triumph has stock
$475.29
Order-in Ask the parts desk
13
T2042899
Spring
Qty 2
PART NO LONGER AVAILABLE
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
14
T2042902
Guide spring
Qty 2
Triumph has stock
$11.76
Order-in Ask the parts desk
15
T2042903
Spacer
Qty 2
No date from Triumph yet
$8.97
On backorder Ask the parts desk
16
T2042904
Cap
Qty 2
Triumph has stock
$75.69
Order-in Ask the parts desk
17
T2042908
Capscrew
Qty 2
Triumph’s Aug 28, 2026 date has passed, we’ll confirm
$10.10
On backorder Ask the parts desk
18
T2042907
Sealing washer
Qty 2
Triumph has stock
$1.05
Order-in Ask the parts desk
19
T2045011
Yoke, Upper, Polished
Qty 1
If the last 6 of your VIN are 45964 or lower
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
19
T2042855
Yoke
Qty 1
If the last 6 of your VIN are 45965 or higher
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
20
T2042850
Yoke
Qty 1
PART NO LONGER AVAILABLE - Lower
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
21
T3050073
Capscrew
Qty 4
M8 x 40mm
No date from Triumph yet
$5.45
On backorder Ask the parts desk
22
T3450250
Moss Plug
Qty 1
Triumph has stock
$1.30
Order-in Ask the parts desk
23
T2040188
Washer
Qty 1
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
24
T2040060
Nut
Qty 1
Triumph has stock
$22.99
Order-in Ask the parts desk
25
T2042905
O Ring, Fork Seal
Qty 2
Triumph has stock
$3.14
Order-in Ask the parts desk
26
2040225-T0301
Adjuster nut
Qty 1
If the last 6 of your VIN are 45964 or lower
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
26
T2040259
Cover, Headstock Assy
Qty 1
If the last 6 of your VIN are 45965 or higher
No date from Triumph yet
$22.53
On backorder Ask the parts desk
27
T2140210
Adjuster Nut, Upper
Qty 1
Triumph has stock
$3.14
Order-in Ask the parts desk
28
T3450200
Plug, Caphead, Chrome
Qty 14
Triumph’s Aug 7, 2026 date has passed, we’ll confirm
$3.88
On backorder Ask the parts desk
29
T3450062
Plug, Plastic, Black
Qty 2
Triumph has stock
$1.30
Order-in Ask the parts desk
30
T3050175
Kit, 4 x Screw M8 x 1.25 x 30 Slv
Qty 2
Triumph has stock
$7.83
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.