PROX – Page 17 – Bill's Exhausts

$1,218.00 off
PROX Valve and Spring Kit 28.SIS2402-2

Sale price $6,244⁰⁰ TWD Regular price $7,462⁰⁰

In stock (119 units)
$379.00 off

PROX Valve and Spring Kit 28.SIS4335-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (7 units)
$379.00 off
PROX Valve and Spring Kit 28.SIS4336-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

Very low stock (1 unit)
$379.00 off

PROX Valve and Spring Kit 28.SIS4338-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (34 units)
$379.00 off

PROX Valve and Spring Kit 28.SES2414-1

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (60 units)
$379.00 off
PROX Valve and Spring Kit 28.SIS4341-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (104 units)
$379.00 off

PROX Valve and Spring Kit 28.SES6351-1

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (26 units)
$474.00 off

PROX Valve and Spring Kit 28.SES2444-1

Sale price $5,097⁰⁰ TWD Regular price $5,571⁰⁰

Very low stock (1 unit)
$379.00 off

PROX Valve and Spring Kit 28.SIS2414-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (7 units)
$474.00 off

PROX Valve and Spring Kit 28.SIS2444-2

Sale price $5,097⁰⁰ TWD Regular price $5,571⁰⁰

Low stock (4 units)
$379.00 off

PROX Valve and Spring Kit 28.SES6353-1

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (32 units)
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$379.00 off

PROX Valve and Spring Kit 28.SIS6351-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰
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$379.00 off

PROX Valve and Spring Kit 28.SIS6353-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰
$4.00 off

PROX Gasket Kit - Complete 34.1115

Sale price $2,548⁰⁰ TWD Regular price $2,552⁰⁰

Low stock (3 units)
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PROX Gasket Kit - Complete 34.122

Regular price $2,867⁰⁰ TWD
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$386.00 off

PROX Gasket Kit - Complete 34.1212

Sale price $2,190⁰⁰ TWD Regular price $2,576⁰⁰
$379.00 off

PROX Intake Valve and Spring Kit 28.SIS1340-2

Sale price $4,778⁰⁰ TWD Regular price $5,157⁰⁰

In stock (5 units)
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PROX Gasket Kit - Complete 34.1218

Regular price $2,867⁰⁰ TWD
PROX Gasket Kit - Complete 34.1223

Regular price $3,345⁰⁰ TWD

Very low stock (1 unit)
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PROX Gasket Kit - Complete 34.1224

Regular price $3,345⁰⁰ TWD
$645.00 off

PROX Gasket Kit - Complete 34.1312

Sale price $3,185⁰⁰ TWD Regular price $3,830⁰⁰

Very low stock (1 unit)
$74.00 off

PROX Gasket Kit - Complete 34.1227

Sale price $6,372⁰⁰ TWD Regular price $6,446⁰⁰

In stock (8 units)
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PROX Gasket Kit - Complete 34.1322

Regular price $3,185⁰⁰ TWD
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$67.00 off

PROX Gasket Kit - Complete 34.1334

Sale price $5,894⁰⁰ TWD Regular price $5,961⁰⁰
PROX Gasket Kit - Complete 34.1409

Regular price $3,345⁰⁰ TWD

Low stock (2 units)
$40.00 off

PROX Gasket Kit - Complete 34.1422

Sale price $6,850⁰⁰ TWD Regular price $6,890⁰⁰

Very low stock (1 unit)
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PROX Gasket Kit - Complete 34.1416

Regular price $3,982⁰⁰ TWD
$24.00 off

PROX Gasket Kit - Complete 34.2218

Sale price $2,229⁰⁰ TWD Regular price $2,253⁰⁰

Very low stock (1 unit)
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PROX Gasket Kit - Complete 34.2221

Regular price $2,389⁰⁰ TWD
$18.00 off

PROX Gasket Kit - Complete 34.2225

Sale price $3,026⁰⁰ TWD Regular price $3,044⁰⁰

In stock (8 units)
PROX Gasket Kit - Complete 34.2222

Regular price $2,389⁰⁰ TWD

Low stock (3 units)
$35.00 off

PROX Gasket Kit - Complete 34.2312

Sale price $2,389⁰⁰ TWD Regular price $2,424⁰⁰

Low stock (2 units)
$35.00 off

PROX Gasket Kit - Complete 34.2317

Sale price $2,389⁰⁰ TWD Regular price $2,424⁰⁰

Low stock (2 units)
$4.00 off

PROX Gasket Kit - Complete 34.2322

Sale price $2,548⁰⁰ TWD Regular price $2,552⁰⁰

In stock (19 units)
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$362.00 off

PROX Gasket Kit - Complete 34.2315

Sale price $2,062⁰⁰ TWD Regular price $2,424⁰⁰
PROX Gasket Kit - Complete 34.2401

Regular price $4,460⁰⁰ TWD

Low stock (3 units)
$39.00 off

PROX Gasket Kit - Complete 34.2414

Sale price $3,345⁰⁰ TWD Regular price $3,384⁰⁰

Low stock (3 units)
PROX Gasket Kit - Complete 34.2418

Regular price $4,460⁰⁰ TWD

Low stock (3 units)
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$362.00 off

PROX Gasket Kit - Complete 34.2319

Sale price $2,062⁰⁰ TWD Regular price $2,424⁰⁰
PROX Gasket Kit - Complete 34.242

Regular price $4,460⁰⁰ TWD

Low stock (4 units)
$25.00 off

PROX Gasket Kit - Complete 34.2426

Sale price $6,053⁰⁰ TWD Regular price $6,078⁰⁰

In stock (5 units)
$81.00 off

PROX Gasket Kit - Complete 34.3218

Sale price $3,504⁰⁰ TWD Regular price $3,585⁰⁰

Low stock (2 units)
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$17.00 off

PROX Gasket Kit - Complete 34.3122

Sale price $2,389⁰⁰ TWD Regular price $2,406⁰⁰
$81.00 off

PROX Gasket Kit - Complete 34.3221

Sale price $3,504⁰⁰ TWD Regular price $3,585⁰⁰

Low stock (2 units)
$74.00 off

PROX Gasket Kit - Complete 34.3321

Sale price $3,663⁰⁰ TWD Regular price $3,737⁰⁰

In stock (5 units)
$81.00 off

PROX Gasket Kit - Complete 34.3224

Sale price $3,504⁰⁰ TWD Regular price $3,585⁰⁰

In stock (6 units)
$74.00 off

PROX Gasket Kit - Complete 34.3319

Sale price $3,663⁰⁰ TWD Regular price $3,737⁰⁰

Low stock (2 units)
$74.00 off

PROX Gasket Kit - Complete 34.3316

Sale price $3,663⁰⁰ TWD Regular price $3,737⁰⁰

Very low stock (1 unit)
PROX Gasket Kit - Complete 34.4021

Regular price $1,911⁰⁰ TWD

Very low stock (1 unit)
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$560.00 off

PROX Gasket Kit - Complete 34.3322

Sale price $3,177⁰⁰ TWD Regular price $3,737⁰⁰

Let customers speak for us

from 667 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.

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