WPS-SP1

SP1 Piston Yam 09-806-01N

Regular price ¥14,200 JPY

In stock (350 units)
SP1 Piston Yam 09-806-02N

Regular price ¥10,400 JPY

In stock (175 units)
SP1 Piston Yam 09-806-04N

Regular price ¥14,200 JPY

Very low stock (1 unit)
SP1 Piston Yam 09-806N

Regular price ¥14,200 JPY

In stock (739 units)
SP1 Piston Yam 09-807-01N

Regular price ¥13,100 JPY

In stock (275 units)
SP1 Piston Yam 09-807-02N

Regular price ¥13,100 JPY

In stock (58 units)
SP1 Piston Yam 09-807N

Regular price ¥9,800 JPY

In stock (200 units)
SP1 Piston Yam 09-808-01

Regular price ¥18,400 JPY

In stock (96 units)
SP1 Piston Yam 09-808-02

Regular price ¥13,900 JPY

In stock (686 units)
SP1 Piston Yam 09-811N

Regular price ¥12,000 JPY

In stock (434 units)
Sold out

SP1 Piston Yam 09-812-01N

Regular price ¥7,300 JPY
Sold out

SP1 Piston Yam 09-812-02N

Regular price ¥12,600 JPY
SP1 Piston Yam 09-812N

Regular price ¥13,900 JPY

In stock (237 units)
SP1 Piston Yam 09-816N

Regular price ¥10,100 JPY

Low stock (3 units)
SP1 Piston Yam 09-817N

Regular price ¥9,500 JPY

In stock (276 units)
SP1 Piston Yam 09-827-02N

Regular price ¥9,900 JPY

In stock (25 units)
Sold out

SP1 Piston Yam 09-827N

Regular price ¥9,000 JPY
Sold out

SP1 Plastic Darts 10/Pk UP-12446 10/PK

Regular price ¥1,600 JPY
Sold out

SP1 Plastic Darts 10/Pk UP-12447BK 10/PK

Regular price ¥1,300 JPY
Sold out

SP1 Plastic Darts 10/Pk UP-12447WI 10/PK

Regular price ¥1,300 JPY
Sold out

SP1 Plastic Darts 10/Pk UP-12449 10/PK

Regular price ¥1,000 JPY
Sold out

SP1 Plastic Darts 10/Pk UP-12451BK 10/PK

Regular price ¥1,300 JPY
Sold out

SP1 Plastic Darts 10/Pk UP-12451WI 10/PK

Regular price ¥1,300 JPY
Sold out

SP1 Plastic Darts 10/Pk UP-12454 10/PK

Regular price ¥1,100 JPY
SP1 Plastic Push Rivet Fender Clips 10/Pk AT-04290 10/PK

Regular price ¥1,000 JPY

In stock (625 units)
SP1 Plastic Push Rivet Fender Clips 10/Pk AT-04291 10/PK

Regular price ¥1,600 JPY

In stock (626 units)
SP1 Plastic Push Rivet Fender Clips 10/Pk AT-04292 10/PK

Regular price ¥1,000 JPY

In stock (625 units)
SP1 Plastic Push Rivet Fender Clips 10/Pk AT-04293 10/PK

Regular price ¥1,000 JPY

In stock (1241 units)
SP1 Plastic Push Rivet Fender Clips 10/Pk UP-12040 10/PK

Regular price ¥1,000 JPY

In stock (1150 units)
SP1 Plastic Rivet Fender Clips 10/Pk AT-04025 10/PK

Regular price ¥1,100 JPY

In stock (643 units)
Sold out

SP1 Plastic Rivet Fender Clips 10/Pk UP-12440 10/PK

Regular price ¥1,500 JPY
SP1 Plastic Rivet Fender Clips 10/Pk UP-12443 10/PK

Regular price ¥1,600 JPY

In stock (642 units)
Sold out

SP1 Plastic Rivet Fender Clips 10/Pk UP-12444 10/PK

Regular price ¥800 JPY
Sold out

SP1 Plug Carrier - 3 Spare Plugs 12-115-01

Regular price ¥2,100 JPY
SP1 Plug Carrier Black 12-115

Regular price ¥1,300 JPY

In stock (325 units)
SP1 Plug-Ifs Hole Pol SM-12811

Regular price ¥2,100 JPY

In stock (1750 units)
SP1 Pod Pre-Filter SM-07150

Regular price ¥2,100 JPY

In stock (708 units)
SP1 Poly Rope 1/8" X 250' LM-11156

Regular price ¥8,700 JPY

In stock (1052 units)
SP1 Poly Rope 3/16" X 250' SM-11031C-1

Regular price ¥10,400 JPY

In stock (124 units)
SP1 Poly Rope 6mmx250 85-206-02

Regular price ¥22,500 JPY

In stock (23 units)
SP1 Poly Starter Rope 4.5mm X 250' Polyester White/Red SM-11033B-1

Regular price ¥9,500 JPY

In stock (69 units)
SP1 Polyester Intake 38mm SM-07047

Regular price ¥4,300 JPY

In stock (1150 units)
Sold out

SP1 Polyester Intake 44mm SM-07048

Regular price ¥3,000 JPY
SP1 Post Kithood Sraps 10/Pk SM-12458

Regular price ¥3,800 JPY

In stock (251 units)
Sold out

SP1 Post/Bar Clamp S-D 4/Pk SM-08753

Regular price ¥10,700 JPY
SP1 Power Disconnect MR-01941

Regular price ¥5,700 JPY

In stock (526 units)
SP1 Power Valve A/C SM-09660

Regular price ¥26,900 JPY

In stock (807 units)
SP1 Power Valve Pol SM-09650

Regular price ¥10,100 JPY

In stock (844 units)
SP1 Power Valve Pol SM-09652

Regular price ¥10,700 JPY

In stock (387 units)
SP1 Power Valve Pol SM-09658

Regular price ¥22,300 JPY

In stock (290 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