COMETIC

¥6,500 off

COMETIC Valve Stem Seal SET 8 total C10202

Sale price ¥1,000 JPY Regular price ¥7,500

In stock (113 units)
COMETIC O-Ring C10201

Regular price ¥900 JPY

In stock (167 units)
COMETIC Intake Seal C10203

Regular price ¥1,400 JPY

In stock (517 units)
COMETIC Injector O-Ring C10205

Regular price ¥700 JPY

In stock (169 units)
¥4,200 off

COMETIC Air Cleaner Seal 4 Pack - M8 C10207

Sale price ¥1,500 JPY Regular price ¥5,700

In stock (86 units)
COMETIC Throttle Body Seal C10204

Regular price ¥2,800 JPY

In stock (68 units)
COMETIC O-Ring C10208

Regular price ¥500 JPY

In stock (52 units)
COMETIC Replacement Seals C10209

Regular price ¥1,400 JPY

In stock (149 units)
COMETIC O-Ring C10210

Regular price ¥500 JPY

In stock (100 units)
COMETIC Injector O-Ring C10206

Regular price ¥700 JPY

In stock (21 units)
COMETIC O-Ring C10212

Regular price ¥500 JPY

In stock (81 units)
COMETIC Primary Seal Kit C10248

Regular price ¥13,600 JPY

In stock (232 units)
COMETIC Seal C10213

Regular price ¥1,200 JPY

In stock (24 units)
COMETIC Pushrod O-Ring - M8 C9586-M8

Regular price ¥2,500 JPY

In stock (13 units)
COMETIC Oil Pump Seal C10305

Regular price ¥1,800 JPY

In stock (1013 units)
COMETIC Primary Gasket C9307F5

Regular price ¥7,100 JPY

In stock (461 units)
COMETIC Primary Gasket C9309F5

Regular price ¥7,100 JPY

In stock (213 units)
COMETIC Primary Gasket C9607F5

Regular price ¥7,100 JPY

In stock (108 units)
COMETIC Primary Gasket C9310F5

Regular price ¥4,700 JPY

In stock (17 units)
COMETIC Inspection Cover Gasket - FL C9305F5

Regular price ¥1,500 JPY

In stock (647 units)
COMETIC Primary Gasket C9314F5

Regular price ¥4,700 JPY

In stock (6 units)
COMETIC Inspection Cover Gasket - FX C9331F5

Regular price ¥1,400 JPY

In stock (957 units)
COMETIC Inspection Cover Gasket - FL C9303F5

Regular price ¥1,500 JPY

Low stock (2 units)
COMETIC Primary Gasket C9308F5

Regular price ¥7,100 JPY

In stock (20 units)
¥600 off

COMETIC Derby Gasket - AFM C9338F5

Sale price ¥1,200 JPY Regular price ¥1,800

In stock (116 units)
COMETIC Cam Cover Gasket - Big Twin C9302F5

Regular price ¥1,500 JPY

In stock (60 units)
COMETIC Cam Cover Gasket - Big Twin C9334F5

Regular price ¥2,500 JPY

In stock (47 units)
COMETIC Cam Cover Gasket - Big Twin C9328F5

Regular price ¥1,900 JPY

In stock (34 units)
COMETIC Cam Cover Gasket - Twin Cam C9575F5

Regular price ¥2,500 JPY

In stock (626 units)
COMETIC Cam Cover Gasket - XL C9311F5

Regular price ¥3,000 JPY

In stock (6 units)
COMETIC Cam Cover Gasket - XL C9313F5

Regular price ¥2,700 JPY

In stock (8 units)
Sold out

COMETIC Top End Gasket Set C1011

Regular price ¥13,400 JPY
Sold out

COMETIC Top End Gasket Set C2004

Regular price ¥9,100 JPY
Sold out

COMETIC Top End Gasket Set C1007

Regular price ¥9,000 JPY
Sold out

COMETIC Gasket Kit with Seal - Polaris C2035S

Regular price ¥15,000 JPY
Sold out

COMETIC Gasket Set - Ultra 96 C2040

Regular price ¥12,300 JPY
Sold out

COMETIC Top End Gasket Set C2045

Regular price ¥12,900 JPY
Sold out

COMETIC Top End Gasket Set C2054

Regular price ¥10,900 JPY
Sold out

COMETIC Top End Gasket Set - Polaris C2057

Regular price ¥12,900 JPY
Sold out

COMETIC Top End Gasket Set C3026

Regular price ¥8,800 JPY
Sold out

COMETIC Top End Gasket Set - Sea-Doo C3029

Regular price ¥8,800 JPY
Sold out

COMETIC Top End Gasket Set C4017

Regular price ¥12,900 JPY
Sold out

COMETIC Top End Gasket Set C4028

Regular price ¥10,900 JPY
Sold out

COMETIC Gasket Kit with Seal - Yamaha C4028S

Regular price ¥12,300 JPY
Sold out

COMETIC Top End Gasket - Kawasaki C6001

Regular price ¥4,400 JPY
Sold out

COMETIC Top End Gasket Set - Kawasaki C6043

Regular price ¥8,200 JPY
Sold out

COMETIC Top End Gasket Set - Viper C4036

Regular price ¥17,600 JPY
Sold out

COMETIC Top End Gasket Set C4026

Regular price ¥12,900 JPY
Sold out

COMETIC Top End Gasket Set - Kawasaki C6004

Regular price ¥11,700 JPY
Sold out

COMETIC Top End Gasket Set - WR 701 C6084

Regular price ¥9,100 JPY

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