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Transmission

Triumph Thruxton 400 · Clutch & Transmission incl. Gearchange Mechanism · 26 parts

Exploded parts diagram — Transmission, Triumph Thruxton 400

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

Motorcycles this catalogue covers

Thruxton 400
2026

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

Every part on this diagram

1
TA551001
Input Shaft
Qty 1
Triumph has stock
$88.68
Order-in Ask the parts desk
2
JP551203
Drive Gear, Fifth
Qty 1
Triumph has stock
$50.64
Order-in Ask the parts desk
3
JP551004
Bush, Fifth Drive
Qty 1
Triumph has stock
$5.49
Order-in Ask the parts desk
4
JY551214
Circlip, External, I/P Shaft
Qty 2
Triumph has stock
$0.53
Order-in Ask the parts desk
5
JP551202
Drive Gear, Third-Fourth
Qty 1
Triumph has stock
$64.87
Order-in Ask the parts desk
6
JP551005
Bush
Qty 1
Triumph has stock
$5.38
Order-in Ask the parts desk
7
JP551204
Drive Gear, Sixth
Qty 1
Triumph has stock
$50.13
Order-in Ask the parts desk
8
JP551201
Drive Gear, Second
Qty 1
Triumph has stock
$29.09
Order-in Ask the parts desk
9
LDB00085
Washer, Plain
Qty 2
Triumph has stock
$0.94
Order-in Ask the parts desk
10
TA551211
First Gear, Driven
Qty 1
Triumph has stock
$58.76
Order-in Ask the parts desk
11
JY551205
Bush
Qty 1
Triumph has stock
$5.49
Order-in Ask the parts desk
12
JP551208
Fifth Gear, Driven
Qty 1
Triumph has stock
$54.81
Order-in Ask the parts desk
13
JY551218
Circlip
Qty 1
Triumph has stock
$0.62
Order-in Ask the parts desk
14
JP551007
Bush, Third, Driven
Qty 1
Triumph has stock
$5.38
Order-in Ask the parts desk
15
JP551206
Third Gear, Driven
Qty 1
Triumph has stock
$45.66
Order-in Ask the parts desk
16
TA551018
Washer, Plain
Qty 1
Triumph has stock
$1.05
Order-in Ask the parts desk
17
JP551207
Fourth Gear, Driven
Qty 1
Triumph has stock
$38.64
Order-in Ask the parts desk
18
TA551003
Output Shaft
Qty 1
Triumph has stock
$58.25
Order-in Ask the parts desk
19
TA551207
Sixth Gear, Driven
Qty 1
Triumph has stock
$48.50
Order-in Ask the parts desk
20
TA551206
Second Gear, Driven
Qty 1
Triumph has stock
$48.21
Order-in Ask the parts desk
21
TA551010
Bush
Qty 1
Triumph has stock
$5.70
Order-in Ask the parts desk
22
39101421
O Ring, ID 20 8 2
Qty 1
Triumph expects Sep 18, 2026
$0.94
On backorder Ask the parts desk
23
TA551005
Collar
Qty 1
Triumph has stock
$10.11
Order-in Ask the parts desk
24
TA141010
Sprocket, Drive, 15T
Qty 1
(15 Teeth)
Triumph has stock
$22.48
Order-in Ask the parts desk
25
JP551223
Washer
Qty 1
Low stock at Triumph
$1.05
Order-in Ask the parts desk
26
LCG00033
Nut, Hex Flanged, M18 x 1.5
Qty 1
No date from Triumph yet
$2.62
On backorder 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.