PROX – Page 2 – Bill's Exhausts

PROX Fork Seal/Wiper Kit - 48 mm ID x 58 mm OD x 9.4 mm T 40.S48589.4

Regular price ¥11,100 JPY

Low stock (4 units)
¥300 off

PROX Fork Seal/Wiper Kit - KX65 40.S334611P

Sale price ¥6,400 JPY Regular price ¥6,700

In stock (81 units)
¥300 off

PROX Fork Seal/Wiper Kit - 43 mm ID x 52.9 mm OD x 9 mm T 40.S4352.99P

Sale price ¥6,400 JPY Regular price ¥6,700

In stock (66 units)
¥300 off

PROX Fork Seal/Wiper Kit - KTM 50 40.S354611P

Sale price ¥6,400 JPY Regular price ¥6,700

In stock (14 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910001

Regular price ¥4,000 JPY

In stock (12 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910002

Regular price ¥4,000 JPY

In stock (20 units)
PROX Master Cylinder Rebuild Kit - Rear 37.910003

Regular price ¥4,000 JPY

In stock (5 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910004

Regular price ¥4,000 JPY

In stock (12 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910005

Regular price ¥4,000 JPY

In stock (5 units)
PROX Master Cylinder Rebuild Kit - Rear 37.910007

Regular price ¥4,000 JPY

In stock (20 units)
PROX Master Cylinder Rebuild Kit - Rear - Honda 37.910008

Regular price ¥4,000 JPY

In stock (10 units)
PROX Rebuild Kit - Master Cylinder - Front 37.91001

Regular price ¥4,000 JPY

In stock (7 units)
Sold out

PROX Rebuild Kit - Master Cylinder - Front 37.910012

Regular price ¥4,000 JPY
PROX Master Cylinder Rebuild Kit - Rear - Suzuki 37.910009

Regular price ¥4,000 JPY

Very low stock (1 unit)
PROX Rebuild Kit - Master Cylinder - Front 37.910011

Regular price ¥4,000 JPY

Low stock (2 units)
Sold out

PROX Rebuild Kit - Master Cylinder - Front 37.910014

Regular price ¥4,000 JPY
PROX Rebuild Kit - Master Cylinder - Front 37.910016

Regular price ¥4,000 JPY

In stock (13 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910015

Regular price ¥4,000 JPY

Very low stock (1 unit)
PROX Rebuild Kit - Master Cylinder - Front 37.910017

Regular price ¥4,000 JPY

Very low stock (1 unit)
PROX Rebuild Kit - Master Cylinder - Front 37.910013

Regular price ¥4,000 JPY

In stock (5 units)
PROX Master Cylinder Rebuild Kit - Rear - Yamaha 37.910019

Regular price ¥4,000 JPY

In stock (10 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910018

Regular price ¥4,000 JPY

Very low stock (1 unit)
Sold out

PROX Rebuild Kit - Master Cylinder - Front 37.910021

Regular price ¥4,000 JPY
PROX Rebuild Kit - Master Cylinder - Front 37.91002

Regular price ¥4,000 JPY

In stock (5 units)
Sold out
¥500 off

PROX Repair Kit - Master Cylinder - Clutch 16.910055

Sale price ¥5,600 JPY Regular price ¥6,100
Sold out

PROX Repair Kit - Master Cylinder - Clutch 16.94

Regular price ¥4,800 JPY
PROX Repair Kit - Master Cylinder - Clutch 16.940001

Regular price ¥5,600 JPY

Low stock (3 units)
PROX Repair Kit - Master Cylinder - Clutch 16.940002

Regular price ¥8,000 JPY

Low stock (3 units)
PROX Repair Kit - Master Cylinder - Clutch 16.940003

Regular price ¥5,600 JPY

Low stock (4 units)
PROX Repair Kit - Master Cylinder - Clutch 16.940004

Regular price ¥5,600 JPY

In stock (5 units)
PROX Repair Kit - Master Cylinder - Clutch 16.940005

Regular price ¥5,600 JPY

Low stock (3 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910023

Regular price ¥4,000 JPY

Low stock (2 units)
Sold out
¥800 off

PROX Repair Kit - Master Cylinder - Clutch 16.940006

Sale price ¥4,500 JPY Regular price ¥5,300
PROX Rebuild Kit - Master Cylinder - Front 37.910022

Regular price ¥4,000 JPY

Low stock (4 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910025

Regular price ¥4,000 JPY

In stock (7 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910028

Regular price ¥4,000 JPY

Very low stock (1 unit)
PROX Rebuild Kit - Master Cylinder - Front 37.910026

Regular price ¥4,000 JPY

Very low stock (1 unit)
¥200 off

PROX Rebuild Kit - Master Cylinder - Front 37.910035

Sale price ¥4,800 JPY Regular price ¥5,000

Low stock (3 units)
¥100 off

PROX Rebuild Kit - Master Cylinder - Rear 37.91003

Sale price ¥6,400 JPY Regular price ¥6,500

In stock (10 units)
PROX Rebuild Kit - Master Cylinder - Front 37.910024

Regular price ¥4,000 JPY

Very low stock (1 unit)
Sold out

PROX Rebuild Kit - Master Cylinder - Front 37.910006

Regular price ¥6,400 JPY
PROX Rebuild Kit - Master Cylinder - Rear 37.910029

Regular price ¥4,000 JPY

Low stock (2 units)
¥2,000 off

PROX Piston Kit 01.1342.C

Sale price ¥29,600 JPY Regular price ¥31,600

Very low stock (1 unit)
¥2,000 off

PROX Piston Kit 01.1342.B

Sale price ¥29,600 JPY Regular price ¥31,600

Very low stock (1 unit)
Sold out

PROX Piston Kit 01.1408.200

Regular price ¥29,600 JPY
Sold out
¥5,100 off

PROX Piston Kit 01.1403.C

Sale price ¥28,700 JPY Regular price ¥33,800
¥2,700 off

PROX Piston Kit 01.1414.C

Sale price ¥31,100 JPY Regular price ¥33,800

Low stock (4 units)
PROX Piston Kit 01.1408.150

Regular price ¥29,600 JPY

In stock (7 units)
¥2,700 off

PROX Piston Kit 01.1411.B

Sale price ¥31,100 JPY Regular price ¥33,800

Low stock (2 units)
¥1,400 off

PROX Piston Kit 47.46 mm YZ 85 2002-2025 01.2114.C

Sale price ¥14,300 JPY Regular price ¥15,700

Low stock (4 units)

Let customers speak for us

from 666 reviews

Arrived super quick

Arrived super quick, no complaints

Anonymous

11/20/2025

IN STOCK M4 Exhaust GP Black Slip on GSXR600/750 2011-2025 SU6112-GP

Great customer support

Great customer support, fast shipping and delivery , and great quality exhaust . Sounds nice 👍🏼 would definitely recommend

Atticus

11/13/2025

IN STOCK M4 Exhaust GP19 Black Slip On 2009 - 2025 2026 ZX6R zx6 KA6922-GP19

Fast service and the pipe is very well made

Fast service and the pipe is very well made.

IN STOCK 72188PD Arrow H.D.1250 Pan America 20-25 Racing St. Steel De-Catalyzed Collector

Purchased the power core 4 along with the mega bomb header

Purchased the power core 4 along with the mega bomb header. Sounds great! Looks even better! Slammed them both on my 22’ KX 250f.

ROBERT T CLARK

11/11/2025

FMF Powercore 4 Muffler KX250F/X 2021-2023 042392 1821-2038

Was trying to find a reseller for Graves products. Stumbled upon this site. No hassles. Ships to Australia (big plus). Now I can mod my dream bike.
Exhaust is gnarly, obnoxious... exactly what I want! Makes all the right sounds.
I'd buy another one if I had another bike.
Super easy fitment, shaved off so much weight with the titanium build.
Absolute piece of art.

Nazzy

11/05/2025

Bill's Exhausts

Great price and amazing sound

Great price and amazing sound.

Michael Adams

10/27/2025

AKRAPOVIC Carbon Fiber Muffler NINJA 400 /500 2018-2025 S-K4SO6-APC 1811-3515

This system with a BT Moto tune sounds and feels amazing

This system with a BT Moto tune sounds and feels amazing. The weight reduction, power increase makes this bike handle even better.
The titanium exhaust system looks amazing.

Lou D

10/19/2025