PROX – Page 13 – Bill's Exhausts

¥700 off
PROX Crank Bearing and Seal Kit 23.CBS61003

Sale price ¥14,300 JPY Regular price ¥15,000

In stock (502 units)
¥100 off

PROX Exhaust Valve 28.1334-1

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

In stock (117 units)
¥200 off

PROX Crank Bearing and Seal Kit 23.CBS64003

Sale price ¥23,200 JPY Regular price ¥23,400

Low stock (2 units)
¥100 off

PROX Exhaust Valve 28.1402-1

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

In stock (167 units)
PROX Exhaust Valve 28.1654-1

Regular price ¥8,800 JPY

In stock (33 units)
¥400 off

PROX Exhaust Valve 28.3402-1

Sale price ¥5,600 JPY Regular price ¥6,000

In stock (84 units)
¥400 off

PROX Exhaust Valve 28.1495-1

Sale price ¥5,600 JPY Regular price ¥6,000

Very low stock (1 unit)
PROX Exhaust Valve 28.2418-1

Regular price ¥4,800 JPY

In stock (98 units)
¥400 off

PROX Intake Valve 28.1654-2

Sale price ¥5,600 JPY Regular price ¥6,000

In stock (36 units)
¥300 off

PROX Intake Valve 28.1495-2

Sale price ¥4,000 JPY Regular price ¥4,300

In stock (78 units)
¥300 off

PROX Intake Valve 28.2418-3

Sale price ¥3,200 JPY Regular price ¥3,500

In stock (75 units)
¥100 off

PROX Intake Valve 28.3402-2

Sale price ¥4,800 JPY Regular price ¥4,900

In stock (19 units)
¥100 off

PROX Exhaust Valve 28.1070-1

Sale price ¥4,000 JPY Regular price ¥4,100

Low stock (4 units)
¥200 off

PROX Intake Valve 28.1070-2

Sale price ¥2,400 JPY Regular price ¥2,600

Low stock (3 units)
¥100 off

PROX Intake Valve 28.1226-2

Sale price ¥3,200 JPY Regular price ¥3,300

In stock (60 units)
PROX Exhaust Valve 28.1226-1

Regular price ¥4,800 JPY

In stock (69 units)
¥200 off

PROX Exhaust Valve 28.1227-1

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

In stock (184 units)
¥300 off

PROX Intake Valve 28.1227-2

Sale price ¥3,200 JPY Regular price ¥3,500

In stock (164 units)
¥100 off

PROX Intake Valve 28.1323-2

Sale price ¥3,200 JPY Regular price ¥3,300

In stock (153 units)
¥100 off

PROX Exhaust Valve 28.1338-1

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

In stock (5 units)
PROX Exhaust Valve 28.1323-1

Regular price ¥4,800 JPY

In stock (75 units)
PROX Exhaust Valve 28.1356-1

Regular price ¥4,800 JPY

In stock (7 units)
PROX Exhaust Valve 28.1381-1

Regular price ¥4,800 JPY

In stock (141 units)
¥100 off

PROX Intake Valve 28.1356-2

Sale price ¥3,200 JPY Regular price ¥3,300

In stock (34 units)
¥100 off

PROX Intake Valve 28.1381-2

Sale price ¥3,200 JPY Regular price ¥3,300

In stock (163 units)
¥100 off

PROX Exhaust Valve 28.2200-1

Sale price ¥4,000 JPY Regular price ¥4,100

In stock (62 units)
¥100 off

PROX Intake Valve 28.2200-2

Sale price ¥2,400 JPY Regular price ¥2,500

In stock (90 units)
Sold out

PROX Exhaust Valve 28.1407-1

Regular price ¥7,200 JPY
PROX Intake Valve 28.2487-2

Regular price ¥4,800 JPY

Low stock (3 units)
PROX Exhaust Valve 28.2661-1

Regular price ¥6,400 JPY

In stock (7 units)
PROX Intake Valve 28.2661-2

Regular price ¥4,800 JPY

In stock (18 units)
PROX Exhaust Valve 28.2487-1

Regular price ¥7,200 JPY

In stock (6 units)
PROX Exhaust Valve 28.2706-1

Regular price ¥6,400 JPY

Low stock (3 units)
PROX Exhaust Valve 28.6520-1

Regular price ¥8,800 JPY

In stock (62 units)
PROX Intake Valve 28.2706-2

Regular price ¥4,000 JPY

Low stock (4 units)
PROX Intake Valve 28.6520-2

Regular price ¥5,600 JPY

In stock (107 units)
PROX Valve Shims - 5 pack 29.74812

Regular price ¥1,600 JPY

In stock (9 units)
PROX Valve Shims - 5 pack 29.748125

Regular price ¥1,600 JPY

Very low stock (1 unit)
Sold out

PROX Valve Shims - 5 pack 29.74813

Regular price ¥1,600 JPY
PROX Valve Shims - 5 pack 29.748135

Regular price ¥1,600 JPY

Low stock (3 units)
PROX Valve Shims - 5 pack 29.74814

Regular price ¥1,600 JPY

In stock (8 units)
PROX Valve Shims - 5 pack 29.748145

Regular price ¥1,600 JPY

In stock (6 units)
PROX Valve Shims - 5 pack 29.74815

Regular price ¥1,600 JPY

In stock (13 units)
PROX Valve Shims - 5 pack 29.74816

Regular price ¥1,600 JPY

In stock (7 units)
PROX Valve Shims - 5 pack 29.748165

Regular price ¥1,600 JPY

In stock (13 units)
PROX Valve Shims - 5 pack 29.748155

Regular price ¥1,600 JPY

In stock (12 units)
PROX Valve Shims - 5 pack 29.748175

Regular price ¥1,600 JPY

In stock (20 units)
PROX Valve Shims - 5 pack 29.74817

Regular price ¥1,600 JPY

In stock (20 units)
PROX Valve Shims - 5 pack 29.74818

Regular price ¥1,600 JPY

In stock (6 units)
PROX Valve Shims - 5 pack 29.748185

Regular price ¥1,600 JPY

In stock (12 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