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Front Brake Master Cylinder & Hoses

Triumph Rocket III · Braking System · 24 parts · 1 on the shelf in Brea

Exploded parts diagram — Front Brake Master Cylinder & Hoses, Triumph Rocket III

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

Motorcycles this catalogue covers

Rocket III
2005–2018

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

Every part on this diagram

1
T2021120
Master Cylinder Assy, Front
Qty 1
If the last 6 of your VIN are 441122 or lower
Triumph has stock
$378.49
Order-in Ask the parts desk
1
T2021121
Master Cylinder Assy, Front
Qty 1
If the last 6 of your VIN are 441123 or higher
Triumph has stock
$378.49
Order-in Ask the parts desk
3
T2025441
Lever Assy
Qty 1
If the last 6 of your VIN are 441122 or lower
Low stock at Triumph
$81.41
Order-in Ask the parts desk
3
T2025421
Lever, Brake
Qty 1
If the last 6 of your VIN are 441123 or higher
Triumph has stock
$81.41
Order-in Ask the parts desk
4
T2020003
Piston Set, M/Cyl, 14.0
Qty 1
If the last 6 of your VIN are 355205 or lower
Low stock at Triumph
$52.81
Order-in Ask the parts desk
4
T2020294
Piston Set, M.Cyl 15.875
Qty 1
If the last 6 of your VIN are 355206 or higher
Low stock at Triumph
$47.51
Order-in Ask the parts desk
5
T2020158
Lever, Bolt, Front M/Cyl
Qty 1
Triumph has stock
$12.56
Order-in Ask the parts desk
6
T2026004
Clamp, Handlebar
Qty 1
Triumph has stock
$16.19
Order-in Ask the parts desk
7
T2026013
Screw, M6 x 20
Qty 2
Triumph has stock
$2.64
Order-in Ask the parts desk
8
T2021217
Switch Set
Qty 1
Triumph has stock
$22.62
Order-in Ask the parts desk
9
T2026006
Cap Set, Reservoir
Qty 1
Triumph has stock
$23.50
Order-in Ask the parts desk
10
T2026017
Diaphragm, Reservoir
Qty 1
Triumph has stock
$19.27
Order-in Ask the parts desk
11
T2020166
Screw, Reservoir
Qty 2
Triumph has stock
$1.77
Order-in Ask the parts desk
12
T2026016
Badge, Reservoir
Qty 1
Triumph has stock
$10.01
Order-in Ask the parts desk
13
T2026120
Brake Hose, Stainless, T-Piece
Qty 1
Grey - Not Classic Or Roadster
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
13
T2026118
Brake Hose
Qty 1
Black - Classic only (incl. Special Edition)
Triumph has stock
$103.83
Order-in Ask the parts desk
14
T3700233
Clip, Brake Hose
Qty 2
Triumph has stock
$5.45
Order-in Ask the parts desk
15
T3250125
Bolt, Banjo, M10 x 21
Qty 3
Not Roadster
Low stock at Triumph
$6.50
Order-in Ask the parts desk
16
T3550229
Washer, 15.2 x 10 x 1, Plated
Qty 6
Not Roadster
$0.99
In stock in Brea Ask the parts desk
17
T3205063
Bolt, HHF, Lghtd, M6 x 16, Slv
Qty 1
Not Roadster
Triumph has stock
$3.24
Order-in Ask the parts desk
18
T2026122
Bracket, Front Brake Hose
Qty 1
Not Roadster
No longer supplied by Triumph
$11.44
Not on our shelf Ask the parts desk
19
T2040884
Clip, Twin, Speedo, Brake
Qty 1
Not Roadster
Low stock at Triumph
$4.39
Order-in Ask the parts desk
20
T2021122
M/Cyl Housing, Front
Qty 1
If the last 6 of your VIN are 355206 or higher
No longer supplied by Triumph
No longer available
Not on our shelf Ask the parts desk
21
T3600153
O Ring, 7.6 x 2.4
Qty 2
If the last 6 of your VIN are 637324 or higher
Triumph has stock
$1.86
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.