WPS-SP1

SP1 Piston T-Moly A/C SM-09220

Regular price ¥16,300 JPY

In stock (1175 units)
SP1 Piston T-Moly A/C SM-09221

Regular price ¥18,400 JPY

In stock (969 units)
SP1 Piston T-Moly A/C SM-09259

Regular price ¥17,100 JPY

In stock (600 units)
SP1 Piston T-Moly A/C SM-09282

Regular price ¥18,100 JPY

In stock (482 units)
SP1 Piston T-Moly A/C SM-09290

Regular price ¥20,600 JPY

In stock (1072 units)
SP1 Piston T-Moly Double Ring S-D SM-09144B

Regular price ¥18,400 JPY

In stock (840 units)
SP1 Piston T-Moly Double Ring S-D SM-09145A

Regular price ¥22,200 JPY

In stock (766 units)
SP1 Piston T-Moly Pol 09-707

Regular price ¥16,000 JPY

In stock (240 units)
SP1 Piston T-Moly Pol 09-712

Regular price ¥13,000 JPY

In stock (1108 units)
SP1 Piston T-Moly Pol 09-712-01

Regular price ¥17,300 JPY

In stock (342 units)
SP1 Piston T-Moly Pol 09-712-02

Regular price ¥13,000 JPY

In stock (1041 units)
SP1 Piston T-Moly Pol 09-712-04

Regular price ¥13,000 JPY

In stock (588 units)
SP1 Piston T-Moly Pol 09-713

Regular price ¥13,000 JPY

In stock (483 units)
Sold out

SP1 Piston T-Moly Pol 09-713-02N

Regular price ¥15,700 JPY
SP1 Piston T-Moly Pol 09-714

Regular price ¥12,500 JPY

In stock (630 units)
Sold out

SP1 Piston T-Moly Pol 09-714-02

Regular price ¥11,300 JPY
SP1 Piston T-Moly Pol 09-716

Regular price ¥12,200 JPY

In stock (828 units)
SP1 Piston T-Moly Pol 09-716-01

Regular price ¥16,500 JPY

In stock (284 units)
SP1 Piston T-Moly Pol 09-716-02

Regular price ¥12,200 JPY

In stock (315 units)
SP1 Piston T-Moly Pol 09-716-04

Regular price ¥12,200 JPY

In stock (540 units)
SP1 Piston T-Moly Pol 09-717-01

Regular price ¥17,300 JPY

In stock (248 units)
SP1 Piston T-Moly Pol 09-720

Regular price ¥14,400 JPY

In stock (712 units)
SP1 Piston T-Moly Pol 09-721

Regular price ¥14,900 JPY

In stock (444 units)
SP1 Piston T-Moly Pol 09-722

Regular price ¥15,500 JPY

In stock (944 units)
SP1 Piston T-Moly Pol 09-726

Regular price ¥16,600 JPY

In stock (316 units)
SP1 Piston T-Moly Pol 09-726-01

Regular price ¥22,000 JPY

In stock (456 units)
SP1 Piston T-Moly Pol 09-726-02

Regular price ¥16,600 JPY

In stock (108 units)
SP1 Piston T-Moly Pol 09-726-04

Regular price ¥22,000 JPY

In stock (264 units)
SP1 Piston T-Moly Pol 09-729

Regular price ¥13,300 JPY

In stock (771 units)
SP1 Piston T-Moly Pol 09-730

Regular price ¥18,700 JPY

In stock (1190 units)
SP1 Piston T-Moly Pol 09-731

Regular price ¥14,900 JPY

In stock (575 units)
SP1 Piston T-Moly Pol 550 SM-09256

Regular price ¥14,900 JPY

In stock (1200 units)
SP1 Piston T-Moly Pol 550 SM-09256-1

Regular price ¥14,900 JPY

In stock (648 units)
SP1 Piston T-Moly Pol 550 SM-09256-2

Regular price ¥14,900 JPY

In stock (460 units)
SP1 Piston T-Moly Pol 550 SM-09256-4

Regular price ¥19,800 JPY

In stock (508 units)
SP1 Piston T-Moly Pol 600 SM-09261

Regular price ¥16,500 JPY

In stock (516 units)
SP1 Piston T-Moly Pol 700 SM-09214

Regular price ¥16,800 JPY

In stock (1200 units)
SP1 Piston T-Moly Pol 800 SM-09247

Regular price ¥17,700 JPY

In stock (600 units)
SP1 Piston T-Moly Pol 800 SM-09279

Regular price ¥18,400 JPY

In stock (619 units)
SP1 Piston T-Moly Pol 800 SM-09287

Regular price ¥19,800 JPY

In stock (1326 units)
SP1 Piston T-Moly Pol SM-09165

Regular price ¥24,800 JPY

In stock (456 units)
SP1 Piston T-Moly Pol SM-09245

Regular price ¥15,200 JPY

In stock (636 units)
SP1 Piston T-Moly Pol SM-09267

Regular price ¥16,800 JPY

In stock (1200 units)
SP1 Piston T-Moly Pol SM-09288

Regular price ¥19,600 JPY

In stock (800 units)
SP1 Piston T-Moly Pol SM-09291

Regular price ¥18,700 JPY

In stock (242 units)
Sold out

SP1 Piston T-Moly Pol SM-09291~OLD

Regular price ¥31,600 JPY
Sold out

SP1 Piston T-Moly Polaris 09-722-02

Regular price ¥12,800 JPY
SP1 Piston T-Moly S-D 09-741

Regular price ¥13,000 JPY

In stock (984 units)
SP1 Piston T-Moly S-D 09-741-01

Regular price ¥17,300 JPY

In stock (527 units)
SP1 Piston T-Moly S-D 09-741-02

Regular price ¥13,000 JPY

In stock (570 units)

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