XCELDYNE

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XCELDYNE Intake Valve XIVM13000

Sale price $6,306⁰⁰ TWD Regular price $6,675⁰⁰
$369.00 off

XCELDYNE Intake Valve XIVM13001

Sale price $6,306⁰⁰ TWD Regular price $6,675⁰⁰

In stock (9 units)
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$672.00 off

XCELDYNE Intake Valve XIVM33001

Sale price $5,113⁰⁰ TWD Regular price $5,785⁰⁰
XCELDYNE Exhaust Valve XEVM12001

Regular price $5,244⁰⁰ TWD

Very low stock (1 unit)
$335.00 off

XCELDYNE Exhaust Valve XEVM13000

Sale price $6,435⁰⁰ TWD Regular price $6,770⁰⁰

In stock (20 units)
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$5,803.00 off

XCELDYNE Exhaust Valve XEVM13001

Sale price $6,435⁰⁰ TWD Regular price $12,238⁰⁰
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XCELDYNE Exhaust Valve XEVM33001

Regular price $5,785⁰⁰ TWD
XCELDYNE Exhaust Valve XEVM33006

Regular price $5,785⁰⁰ TWD

Very low stock (1 unit)
$152.00 off

XCELDYNE Valve Locks - Exhaust XLOM45801

Sale price $1,214⁰⁰ TWD Regular price $1,366⁰⁰

In stock (11 units)
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$152.00 off

XCELDYNE Valve Locks XLOM55751

Sale price $1,214⁰⁰ TWD Regular price $1,366⁰⁰
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$152.00 off

XCELDYNE Valve Locks XLOM50751

Sale price $1,214⁰⁰ TWD Regular price $1,366⁰⁰
$152.00 off

XCELDYNE Valve Locks XLOM55761

Sale price $1,214⁰⁰ TWD Regular price $1,366⁰⁰

Low stock (3 units)
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XCELDYNE Valve Spring Retainer XREM22000

Regular price $5,371⁰⁰ TWD
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$32.00 off

XCELDYNE Valve Spring Locators XSSM13001

Sale price $857⁰⁰ TWD Regular price $889⁰⁰
$92.00 off

XCELDYNE Valve Spring Locators XSSM13000

Sale price $1,655⁰⁰ TWD Regular price $1,747⁰⁰

In stock (8 units)
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$360.00 off

XCELDYNE Valve Guide Kit - Exhaust CVGM12001

Sale price $1,165⁰⁰ TWD Regular price $1,525⁰⁰
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$360.00 off

XCELDYNE Valve Guide Kit - Exhaust CVGM12002

Sale price $1,165⁰⁰ TWD Regular price $1,525⁰⁰
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$360.00 off

XCELDYNE Valve Guide Kit - Exhaust CVGM13005

Sale price $1,165⁰⁰ TWD Regular price $1,525⁰⁰
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$360.00 off
XCELDYNE Valve Guide Kit - Intake CVGM23000

Sale price $1,165⁰⁰ TWD Regular price $1,525⁰⁰
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$360.00 off

XCELDYNE Valve Guide Kit - Intake/Exhaust CVGM33000

Sale price $1,165⁰⁰ TWD Regular price $1,525⁰⁰
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$459.00 off

XCELDYNE Valve Spring Bucket XBT13101

Sale price $4,467⁰⁰ TWD Regular price $4,926⁰⁰
$459.00 off

XCELDYNE Valve Spring Bucket KX250F/ RMZ250 XBT22202

Sale price $4,467⁰⁰ TWD Regular price $4,926⁰⁰

Very low stock (1 unit)
Sold out
$321.00 off

XCELDYNE Intake/Exhaust Valve Springs PSIMX2004

Sale price $6,004⁰⁰ TWD Regular price $6,325⁰⁰
$107.00 off

XCELDYNE Intake Valve Springs PSIMX2104

Sale price $2,403⁰⁰ TWD Regular price $2,510⁰⁰

Low stock (2 units)
$107.00 off

XCELDYNE Exhaust Valve Springs PSIMX2401

Sale price $2,403⁰⁰ TWD Regular price $2,510⁰⁰

Very low stock (1 unit)
$107.00 off

XCELDYNE Intake Valve Springs PSIMX1905

Sale price $2,403⁰⁰ TWD Regular price $2,510⁰⁰

Very low stock (1 unit)
Sold out
$107.00 off

XCELDYNE Intake Valve Springs PSIMX2402

Sale price $2,403⁰⁰ TWD Regular price $2,510⁰⁰
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$14.00 off

XCELDYNE Valve Seal Kit CVMSEA12000

Sale price $494⁰⁰ TWD Regular price $508⁰⁰
$14.00 off

XCELDYNE Valve Seal Kit CVMSEA12001

Sale price $494⁰⁰ TWD Regular price $508⁰⁰

Very low stock (1 unit)
XCELDYNE Valve Seal Kit CVMSEA13001

Regular price $508⁰⁰ TWD

Very low stock (1 unit)
Sold out
$37.00 off
XCELDYNE Valve Seal Kit CVMSEA33000

Sale price $471⁰⁰ TWD Regular price $508⁰⁰
$107.00 off

XCELDYNE Intake Valve Springs PSIMX2006

Sale price $2,403⁰⁰ TWD Regular price $2,510⁰⁰

Low stock (3 units)
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$37.00 off

XCELDYNE Valve Seal Kit CVMSEA23000

Sale price $471⁰⁰ TWD Regular price $508⁰⁰
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$17.00 off
XCELDYNE Valve Seal Kit CVMSEA43000

Sale price $618⁰⁰ TWD Regular price $635⁰⁰
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$37.00 off

XCELDYNE Valve Seal Kit CVMSEA22000

Sale price $471⁰⁰ TWD Regular price $508⁰⁰
XCELDYNE Exhaust Valve Springs PSIMX2008

Regular price $2,510⁰⁰ TWD

Very low stock (1 unit)
Sold out
$541.00 off
XCELDYNE Intake Valve Kit X2VIK43000

Sale price $10,107⁰⁰ TWD Regular price $10,648⁰⁰
Sold out
$368.00 off
XCELDYNE Exhaust Valve Kit X2VEK13001

Sale price $7,038⁰⁰ TWD Regular price $7,406⁰⁰
$255.00 off

XCELDYNE Intake Valve X2SIVM13001

Sale price $1,270⁰⁰ TWD Regular price $1,525⁰⁰

Very low stock (1 unit)
$125.00 off
XCELDYNE Intake Valve Kit X2SIVM42002

Sale price $1,273⁰⁰ TWD Regular price $1,398⁰⁰

Low stock (2 units)
Sold out
$247.00 off
XCELDYNE X2 Titanium Valve - Exhaust X2TEVM43000

Sale price $3,503⁰⁰ TWD Regular price $3,750⁰⁰
$247.00 off

XCELDYNE X2 Titanium Valve - Intake X2TIVM13000

Sale price $3,503⁰⁰ TWD Regular price $3,750⁰⁰

In stock (9 units)
Sold out
$604.00 off

XCELDYNE X2 Titanium Valve - Intake X2TIVM43001

Sale price $3,146⁰⁰ TWD Regular price $3,750⁰⁰
$247.00 off

XCELDYNE X2 Titanium Valve - Intake X2TIVM42004

Sale price $3,503⁰⁰ TWD Regular price $3,750⁰⁰

Very low stock (1 unit)
$247.00 off

XCELDYNE X2 Titanium Valve - Intake X2TIVM43008

Sale price $3,503⁰⁰ TWD Regular price $3,750⁰⁰

Low stock (2 units)

Let customers speak for us

from 674 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