Water Engine

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WSM Top-End Rebuild Kit - Original Series - Standard 010-825-10

Sale price $357⁰⁰ AUD Regular price $366⁰⁰

Very low stock (1 unit)
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WSM Top-End Rebuild Kit - Original Series - +0.25 mm 010-825-11

Regular price $366⁰⁰ AUD
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WSM Top-End Rebuild Kit - Original Series - +0.75 mm 010-825-13

Regular price $366⁰⁰ AUD
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$9.00 off

WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-825-12

Sale price $357⁰⁰ AUD Regular price $366⁰⁰
WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-827-22

Regular price $564⁰⁰ AUD

Low stock (2 units)
$9.00 off

WSM Top-End Rebuild Kit - Original Series - +1.00 mm 010-825-14

Sale price $357⁰⁰ AUD Regular price $366⁰⁰

Very low stock (1 unit)
$11.00 off

WSM Piston Kit - Yamaha - Standard 010-826K

Sale price $128⁰⁰ AUD Regular price $139⁰⁰

In stock (70 units)
$75.00 off

WSM Top-End Rebuild Kit - Original Series - Standard 010-826-10

Sale price $357⁰⁰ AUD Regular price $432⁰⁰

Low stock (2 units)
$11.00 off

WSM Piston Kit - Yamaha - +.25 mm 010-826-04K

Sale price $128⁰⁰ AUD Regular price $139⁰⁰

Very low stock (1 unit)
$82.00 off

WSM Top-End Rebuild Kit - Original Series - +0.25 mm 010-826-11

Sale price $350⁰⁰ AUD Regular price $432⁰⁰

In stock (86 units)
$11.00 off

WSM Piston Kit - Yamaha - +.5 mm 010-826-05K

Sale price $128⁰⁰ AUD Regular price $139⁰⁰

Low stock (3 units)
$134.00 off

WSM Top-End Rebuild Kit - Original Series - Standard 010-826-20

Sale price $549⁰⁰ AUD Regular price $683⁰⁰

In stock (44 units)
$75.00 off

WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-826-12

Sale price $357⁰⁰ AUD Regular price $432⁰⁰

Low stock (3 units)
$123.00 off

WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-826-22

Sale price $560⁰⁰ AUD Regular price $683⁰⁰

In stock (69 units)
$11.00 off

WSM Piston Kit - Yamaha - +.5 mm 010-829-05PK

Sale price $140⁰⁰ AUD Regular price $151⁰⁰

Very low stock (1 unit)
$134.00 off

WSM Top-End Rebuild Kit - Original Series - +0.25 mm 010-826-21

Sale price $549⁰⁰ AUD Regular price $683⁰⁰

In stock (67 units)
$157.00 off

WSM Top-End Rebuild Kit - Platinum Series - Standard 010-829-10P

Sale price $637⁰⁰ AUD Regular price $794⁰⁰

In stock (55 units)
$11.00 off

WSM Piston Kit - GP1200R - Standard 010-829PK

Sale price $140⁰⁰ AUD Regular price $151⁰⁰

In stock (342 units)
$19.00 off

WSM Piston Kit - Polaris 750 - Standard 010-830K

Sale price $128⁰⁰ AUD Regular price $147⁰⁰

In stock (51 units)
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WSM Top-End Rebuild Kit - Original Series - Standard 010-830-10

Regular price $577⁰⁰ AUD
WSM Piston Kit - Polaris 750 - +1 mm 010-830-07K

Regular price $147⁰⁰ AUD

Very low stock (1 unit)
$19.00 off

WSM Piston Kit - Polaris 750 - +.5 mm 010-830-05K

Sale price $128⁰⁰ AUD Regular price $147⁰⁰

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WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-830-12

Regular price $577⁰⁰ AUD
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WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-831-12

Regular price $492⁰⁰ AUD
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WSM Top-End Rebuild Kit - Original Series - +1.00 mm 010-830-14

Regular price $577⁰⁰ AUD
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WSM Piston Kit - Polaris - Standard 010-831K

Regular price $147⁰⁰ AUD
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$7.00 off

WSM Piston Kit - Polaris - Standard 010-832K

Sale price $140⁰⁰ AUD Regular price $147⁰⁰
WSM Piston Kit - Polaris - +.5 mm 010-831-05K

Regular price $147⁰⁰ AUD

Low stock (2 units)
WSM Top-End Rebuild Kit - Original Series - Standard 010-831-10

Regular price $501⁰⁰ AUD

Very low stock (1 unit)
$7.00 off

WSM Piston Kit - Polaris - +.5 mm 010-832-05K

Sale price $140⁰⁰ AUD Regular price $147⁰⁰

Low stock (4 units)
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$5.00 off

WSM Top-End Rebuild Kit - Original Series - Standard 010-832-10

Sale price $344⁰⁰ AUD Regular price $349⁰⁰
$5.00 off

WSM Top-End Rebuild Kit - Original Series - +0.25 mm 010-832-11

Sale price $344⁰⁰ AUD Regular price $349⁰⁰

In stock (27 units)
$5.00 off

WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-832-12

Sale price $344⁰⁰ AUD Regular price $349⁰⁰

In stock (26 units)
WSM Top-End Rebuild Kit - Original Series - +0.25 mm 010-832-21

Regular price $489⁰⁰ AUD

Very low stock (1 unit)
WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-832-22

Regular price $499⁰⁰ AUD

Very low stock (1 unit)
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WSM Piston Kit - Polaris - +.5 mm 010-834-05K

Regular price $147⁰⁰ AUD
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$19.00 off
WSM Piston Kit - Polaris - Standard 010-834K

Sale price $128⁰⁰ AUD Regular price $147⁰⁰
$68.00 off

WSM Top-End Rebuild Kit - Original Series - Standard 010-834-10

Sale price $509⁰⁰ AUD Regular price $577⁰⁰

In stock (164 units)
$68.00 off

WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-834-12

Sale price $509⁰⁰ AUD Regular price $577⁰⁰

Low stock (2 units)
$15.00 off

WSM Piston Kit - Kawasaki 900 - +.5 mm 010-840-05K

Sale price $115⁰⁰ AUD Regular price $130⁰⁰

Very low stock (1 unit)
$94.00 off

WSM Top-End Rebuild Kit - Original Series - Standard 010-840-10

Sale price $484⁰⁰ AUD Regular price $578⁰⁰

Very low stock (1 unit)
$15.00 off

WSM Piston Kit - Kawasaki 900 - Standard 010-840K

Sale price $115⁰⁰ AUD Regular price $130⁰⁰

Very low stock (1 unit)
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$182.00 off

WSM Top-End Rebuild Kit - Platinum Series - Standard 010-841-10P

Sale price $586⁰⁰ AUD Regular price $768⁰⁰
$19.00 off

WSM Piston Kit - K1200 - Standard 010-841PK

Sale price $140⁰⁰ AUD Regular price $159⁰⁰

In stock (6 units)
$94.00 off

WSM Top-End Rebuild Kit - Original Series - +1.00 mm 010-840-14

Sale price $484⁰⁰ AUD Regular price $578⁰⁰

Low stock (4 units)
$94.00 off

WSM Top-End Rebuild Kit - Original Series - +0.50 mm 010-840-12

Sale price $484⁰⁰ AUD Regular price $578⁰⁰

In stock (49 units)
WSM Piston Kit - K1200 - +.5 mm 010-841-05PK

Regular price $159⁰⁰ AUD

Low stock (2 units)
WSM Piston Rings 010-902

Regular price $36⁰⁰ AUD

Low stock (2 units)
WSM Piston Rings 010-910

Regular price $37⁰⁰ AUD

Very low stock (1 unit)
WSM Piston Rings 010-915-05

Regular price $65⁰⁰ AUD

Very low stock (1 unit)

Let customers speak for us

from 672 reviews

Will Be Back!

I recently purchased the Arrow Race-Tech Slip-On Exhaust (Aluminum Dark) for my Kawasaki Z900 (’17–’24), and I couldn’t be happier. The quality is top-tier—lightweight, beautifully finished, and it gives the bike the deep, aggressive sound it should’ve had from the factory. Throttle response feels smoother, and the overall riding experience is noticeably more exciting.

Huge shoutout to Bill from Bills Exhaust. His communication was excellent from start to finish—quick replies, honest info, and genuinely great customer service. The exhaust shipped fast with no delays, no issues, and no backorder nonsense. Exactly what you want when ordering parts for your bike.

If you’re on the fence, go for it. The exhaust is incredible, and Bill makes the whole process even better. Highly recommend!

Brian Brayley

12/01/2025

71856AKN Arrow Race-Tech Slip-on Exhaust, Aluminum Dark for Kawasaki Z900 17-24

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