PROX – Page 17 – Bill's Exhausts

$1,214.00 off
PROX Valve and Spring Kit 28.SIS2402-2

Sale price $6,226⁰⁰ TWD Regular price $7,440⁰⁰

In stock (113 units)
$378.00 off

PROX Valve and Spring Kit 28.SIS4335-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

In stock (7 units)
$378.00 off
PROX Valve and Spring Kit 28.SIS4336-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

Very low stock (1 unit)
$378.00 off

PROX Valve and Spring Kit 28.SIS4338-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

In stock (32 units)
$378.00 off

PROX Valve and Spring Kit 28.SES2414-1

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

In stock (57 units)
$378.00 off
PROX Valve and Spring Kit 28.SIS4341-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

In stock (100 units)
$378.00 off

PROX Valve and Spring Kit 28.SES6351-1

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

In stock (26 units)
$473.00 off

PROX Valve and Spring Kit 28.SES2444-1

Sale price $5,082⁰⁰ TWD Regular price $5,555⁰⁰

Very low stock (1 unit)
$378.00 off

PROX Valve and Spring Kit 28.SIS2414-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

In stock (7 units)
$473.00 off

PROX Valve and Spring Kit 28.SIS2444-2

Sale price $5,082⁰⁰ TWD Regular price $5,555⁰⁰

In stock (5 units)
$378.00 off

PROX Valve and Spring Kit 28.SES6353-1

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

In stock (30 units)
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$378.00 off

PROX Valve and Spring Kit 28.SIS6351-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰
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$378.00 off

PROX Valve and Spring Kit 28.SIS6353-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰
$4.00 off

PROX Gasket Kit - Complete 34.1115

Sale price $2,541⁰⁰ TWD Regular price $2,545⁰⁰

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

Regular price $2,858⁰⁰ TWD
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$386.00 off

PROX Gasket Kit - Complete 34.1212

Sale price $2,183⁰⁰ TWD Regular price $2,569⁰⁰
$378.00 off

PROX Intake Valve and Spring Kit 28.SIS1340-2

Sale price $4,764⁰⁰ TWD Regular price $5,142⁰⁰

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

Regular price $2,858⁰⁰ TWD
PROX Gasket Kit - Complete 34.1223

Regular price $3,335⁰⁰ TWD

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

Regular price $3,335⁰⁰ TWD
$642.00 off

PROX Gasket Kit - Complete 34.1312

Sale price $3,176⁰⁰ TWD Regular price $3,818⁰⁰

Very low stock (1 unit)
$75.00 off

PROX Gasket Kit - Complete 34.1227

Sale price $6,353⁰⁰ TWD Regular price $6,428⁰⁰

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

Regular price $3,176⁰⁰ TWD
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$68.00 off

PROX Gasket Kit - Complete 34.1334

Sale price $5,876⁰⁰ TWD Regular price $5,944⁰⁰
PROX Gasket Kit - Complete 34.1409

Regular price $3,335⁰⁰ TWD

Low stock (2 units)
$41.00 off

PROX Gasket Kit - Complete 34.1422

Sale price $6,829⁰⁰ TWD Regular price $6,870⁰⁰

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

Regular price $3,970⁰⁰ TWD
$24.00 off

PROX Gasket Kit - Complete 34.2218

Sale price $2,223⁰⁰ TWD Regular price $2,247⁰⁰

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

Regular price $2,382⁰⁰ TWD
$18.00 off

PROX Gasket Kit - Complete 34.2225

Sale price $3,017⁰⁰ TWD Regular price $3,035⁰⁰

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

Regular price $2,382⁰⁰ TWD

Low stock (3 units)
$35.00 off

PROX Gasket Kit - Complete 34.2312

Sale price $2,382⁰⁰ TWD Regular price $2,417⁰⁰

Low stock (2 units)
$35.00 off

PROX Gasket Kit - Complete 34.2317

Sale price $2,382⁰⁰ TWD Regular price $2,417⁰⁰

Low stock (2 units)
$4.00 off

PROX Gasket Kit - Complete 34.2322

Sale price $2,541⁰⁰ TWD Regular price $2,545⁰⁰

In stock (19 units)
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$361.00 off

PROX Gasket Kit - Complete 34.2315

Sale price $2,056⁰⁰ TWD Regular price $2,417⁰⁰
PROX Gasket Kit - Complete 34.2401

Regular price $4,447⁰⁰ TWD

Low stock (3 units)
$39.00 off

PROX Gasket Kit - Complete 34.2414

Sale price $3,335⁰⁰ TWD Regular price $3,374⁰⁰

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

Regular price $4,447⁰⁰ TWD

Low stock (3 units)
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$361.00 off

PROX Gasket Kit - Complete 34.2319

Sale price $2,056⁰⁰ TWD Regular price $2,417⁰⁰
PROX Gasket Kit - Complete 34.242

Regular price $4,447⁰⁰ TWD

Low stock (4 units)
$26.00 off

PROX Gasket Kit - Complete 34.2426

Sale price $6,035⁰⁰ TWD Regular price $6,061⁰⁰

In stock (5 units)
$80.00 off

PROX Gasket Kit - Complete 34.3218

Sale price $3,494⁰⁰ TWD Regular price $3,574⁰⁰

Low stock (2 units)
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$17.00 off

PROX Gasket Kit - Complete 34.3122

Sale price $2,382⁰⁰ TWD Regular price $2,399⁰⁰
$80.00 off

PROX Gasket Kit - Complete 34.3221

Sale price $3,494⁰⁰ TWD Regular price $3,574⁰⁰

Low stock (2 units)
$74.00 off

PROX Gasket Kit - Complete 34.3321

Sale price $3,652⁰⁰ TWD Regular price $3,726⁰⁰

In stock (5 units)
$80.00 off

PROX Gasket Kit - Complete 34.3224

Sale price $3,494⁰⁰ TWD Regular price $3,574⁰⁰

In stock (6 units)
$74.00 off

PROX Gasket Kit - Complete 34.3319

Sale price $3,652⁰⁰ TWD Regular price $3,726⁰⁰

Low stock (2 units)
$74.00 off

PROX Gasket Kit - Complete 34.3316

Sale price $3,652⁰⁰ TWD Regular price $3,726⁰⁰

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

Regular price $1,905⁰⁰ TWD

Very low stock (1 unit)
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$558.00 off

PROX Gasket Kit - Complete 34.3322

Sale price $3,168⁰⁰ TWD Regular price $3,726⁰⁰

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