PROX – Page 29 – Bill's Exhausts

¥1,900 off

PROX Piston Kit 01.4216.B

Sale price ¥16,900 JPY Regular price ¥18,800

In stock (6 units)
¥1,900 off

PROX Piston Kit 01.4218.C

Sale price ¥16,900 JPY Regular price ¥18,800

Low stock (4 units)
¥1,900 off

PROX Piston Kit 01.4218.A

Sale price ¥16,900 JPY Regular price ¥18,800

In stock (64 units)
¥400 off

PROX Ring Set 2.4217

Sale price ¥4,000 JPY Regular price ¥4,400

Low stock (3 units)
Sold out

PROX Ring Set 2.4305

Regular price ¥6,400 JPY
Sold out
¥3,600 off

PROX Piston Kit 01.4306.C

Sale price ¥20,400 JPY Regular price ¥24,000
¥1,700 off

PROX Piston Kit 01.4322.C

Sale price ¥22,300 JPY Regular price ¥24,000

Low stock (4 units)
Sold out
PROX Ring Set 2.4312

Regular price ¥6,400 JPY
¥1,700 off

PROX Piston Kit 01.4322.B

Sale price ¥22,300 JPY Regular price ¥24,000

In stock (56 units)
Sold out
¥3,600 off

PROX Piston Kit 01.4306.B

Sale price ¥20,400 JPY Regular price ¥24,000
¥1,500 off

PROX Piston Kit 01.4285.A

Sale price ¥20,700 JPY Regular price ¥22,200

Low stock (3 units)
¥1,500 off

PROX Piston Kit 01.4285.B

Sale price ¥20,700 JPY Regular price ¥22,200

In stock (18 units)
¥1,500 off

PROX Piston Kit 01.4285.C

Sale price ¥20,700 JPY Regular price ¥22,200

Very low stock (1 unit)
PROX Ring Set 2.4285

Regular price ¥7,200 JPY

Very low stock (1 unit)
PROX Piston Kit 01.4408.B

Regular price ¥29,600 JPY

Low stock (2 units)
PROX Piston Kit 01.4408.A

Regular price ¥29,600 JPY

Low stock (4 units)
¥1,700 off

PROX Piston Kit 01.1315.A

Sale price ¥22,300 JPY Regular price ¥24,000

In stock (8 units)
¥1,700 off

PROX Piston Kit 01.1315.A1

Sale price ¥22,300 JPY Regular price ¥24,000

In stock (47 units)
Sold out
¥1,700 off

PROX Piston Kit 01.1315.A3

Sale price ¥22,300 JPY Regular price ¥24,000
Sold out
¥1,700 off

PROX Piston Kit 01.1315.A2

Sale price ¥22,300 JPY Regular price ¥24,000
PROX Ring Set 2.1315

Regular price ¥8,000 JPY

In stock (11 units)
¥1,700 off

PROX Piston Kit 01.1320.A

Sale price ¥22,300 JPY Regular price ¥24,000

In stock (60 units)
¥1,700 off

PROX Piston Kit 01.1320.A2

Sale price ¥22,300 JPY Regular price ¥24,000

Low stock (3 units)
¥1,700 off

PROX Piston Kit 01.1320.A1

Sale price ¥22,300 JPY Regular price ¥24,000

In stock (66 units)
Sold out
¥1,700 off

PROX Piston Kit 01.1320.A3

Sale price ¥22,300 JPY Regular price ¥24,000
¥300 off

PROX Piston Kit 01.2660.000

Sale price ¥22,300 JPY Regular price ¥22,600

In stock (48 units)
¥300 off

PROX Piston Kit 01.2660.100

Sale price ¥22,300 JPY Regular price ¥22,600

Low stock (2 units)
¥1,900 off

PROX Piston Kit 01.3214.B

Sale price ¥16,900 JPY Regular price ¥18,800

Low stock (2 units)
¥300 off

PROX Piston Kit 01.2660.050

Sale price ¥22,300 JPY Regular price ¥22,600

In stock (63 units)
¥1,900 off

PROX Piston Kit 01.3214.C

Sale price ¥16,900 JPY Regular price ¥18,800

Very low stock (1 unit)
¥1,900 off

PROX Piston Kit 01.3214.D

Sale price ¥16,900 JPY Regular price ¥18,800

Very low stock (1 unit)
¥400 off

PROX Ring Set 2.3212

Sale price ¥4,000 JPY Regular price ¥4,400

Very low stock (1 unit)
¥700 off

PROX Piston Kit 01.3220.A

Sale price ¥16,200 JPY Regular price ¥16,900

In stock (7 units)
PROX Piston Kit 01.3220.C

Regular price ¥16,900 JPY

Low stock (2 units)
¥700 off

PROX Piston Kit 01.3220.B

Sale price ¥16,200 JPY Regular price ¥16,900

Very low stock (1 unit)
PROX Piston Kit 01.3220.D

Regular price ¥16,900 JPY

Low stock (3 units)
¥1,100 off

PROX Piston Kit 01.3310.B

Sale price ¥20,700 JPY Regular price ¥21,800

Low stock (4 units)
¥1,100 off

PROX Piston Kit 01.3310.C

Sale price ¥20,700 JPY Regular price ¥21,800

Very low stock (1 unit)
Sold out
¥1,100 off

PROX Piston Kit 01.3310.D

Sale price ¥20,700 JPY Regular price ¥21,800
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PROX Piston Kit 01.3111.050

Regular price ¥15,700 JPY
¥1,300 off

PROX Piston Kit 01.3320.A

Sale price ¥20,700 JPY Regular price ¥22,000

Very low stock (1 unit)
¥1,300 off

PROX Piston Kit 01.3320.C

Sale price ¥20,700 JPY Regular price ¥22,000

Very low stock (1 unit)
¥1,300 off

PROX Piston Kit 01.3320.B

Sale price ¥20,700 JPY Regular price ¥22,000

In stock (9 units)
Sold out
¥1,100 off

PROX Piston Kit 01.3310.E

Sale price ¥20,700 JPY Regular price ¥21,800
¥3,300 off

PROX Piston Kit 01.2314.B

Sale price ¥20,700 JPY Regular price ¥24,000

In stock (45 units)
¥3,300 off

PROX Piston Kit 01.2314.C

Sale price ¥20,700 JPY Regular price ¥24,000

In stock (39 units)
PROX Piston Kit 01.2109.C

Regular price ¥15,700 JPY

Low stock (2 units)
PROX Ring Set 2.2314

Regular price ¥8,000 JPY

Very low stock (1 unit)
Sold out

PROX Ring Set 02.2103.000

Regular price ¥4,200 JPY
¥3,300 off

PROX Piston Kit 01.2314.D

Sale price ¥20,700 JPY Regular price ¥24,000

In stock (6 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