WPS-SP1

SP1 Radiator Cap S-D SM-10005

Regular price ¥1,800 JPY

In stock (500 units)
SP1 Radiator Cap S-D SM-10009

Regular price ¥2,100 JPY

In stock (1150 units)
SP1 Rail Brace Kit Ac SM-12652

Regular price ¥21,900 JPY

In stock (318 units)
SP1 Rail Mounted Ice Scratchers S-D SM-12597

Regular price ¥13,200 JPY

In stock (1186 units)
SP1 Rail Repair Kit SM-04150

Regular price ¥14,800 JPY

In stock (536 units)
SP1 Ram Tube Vm30-34mm 07-298-02

Regular price ¥3,200 JPY

In stock (898 units)
SP1 Ram Tube Vm36-38mm 07-299-01

Regular price ¥3,200 JPY

In stock (1300 units)
SP1 Rca Jack Dual Splitter UP-01058

Regular price ¥1,000 JPY

In stock (782 units)
SP1 Rca Plug Adapter SM-01200

Regular price ¥1,100 JPY

In stock (841 units)
SP1 Rear Bumper 129 S-D SC-12678

Regular price ¥22,400 JPY

In stock (260 units)
SP1 Rear Bumper 137 S-D SC-12679

Regular price ¥25,500 JPY

In stock (90 units)
SP1 Rear Bumper 137 S-D SM-12697

Regular price ¥16,400 JPY

In stock (335 units)
SP1 Rear Bumper 146 S-D SC-12680

Regular price ¥25,800 JPY

In stock (104 units)
SP1 Rear Bumper 146 S-D SM-12543

Regular price ¥34,200 JPY

In stock (312 units)
SP1 Rear Bumper 154 S-D SC-12681

Regular price ¥27,700 JPY

In stock (572 units)
SP1 Rear Bumper 154 S-D SM-12544

Regular price ¥32,600 JPY

In stock (338 units)
SP1 Rear Bumper 154 S-D SM-12698

Regular price ¥17,300 JPY

In stock (116 units)
Sold out

SP1 Rear Bumper 163 S-D SM-12545

Regular price ¥20,300 JPY
SP1 Rear Bumper 165 S-D SM-12699

Regular price ¥18,600 JPY

In stock (289 units)
SP1 Rear Bumper A/C SC-12682

Regular price ¥19,400 JPY

In stock (316 units)
SP1 Rear Bumper A/C SC-12683

Regular price ¥19,100 JPY

In stock (390 units)
SP1 Rear Bumper A/C SC-12684

Regular price ¥17,000 JPY

In stock (488 units)
SP1 Rear Bumper A/C SC-12685

Regular price ¥16,400 JPY

In stock (234 units)
SP1 Rear Bumper A/C SC-12687

Regular price ¥23,000 JPY

In stock (488 units)
Sold out

SP1 Rear Bumper Pol SM-12532

Regular price ¥12,600 JPY
Sold out

SP1 Rear Bumper Pol SM-12533

Regular price ¥11,700 JPY
SP1 Rear Bumper Pol SM-12534

Regular price ¥15,800 JPY

In stock (486 units)
SP1 Rear Bumper Pol SM-12535

Regular price ¥16,600 JPY

In stock (498 units)
Sold out

SP1 Rear Bumper Pol SM-12536

Regular price ¥12,500 JPY
Sold out

SP1 Rear Bumper Pol SM-12537

Regular price ¥15,800 JPY
SP1 Rear Bumper Pol SM-12682

Regular price ¥19,200 JPY

In stock (916 units)
SP1 Rear Bumper Pol SM-12693

Regular price ¥8,500 JPY

In stock (442 units)
SP1 Rear Bumper Replacement SC-12057

Regular price ¥15,500 JPY

In stock (522 units)
SP1 Rear Bumper S-D Rev Xp SM-12022

Regular price ¥12,100 JPY

In stock (931 units)
SP1 Rear Bumper S-D SC-12546BK

Regular price ¥15,600 JPY

In stock (140 units)
SP1 Rear Bumper S-D SM-12695

Regular price ¥13,700 JPY

In stock (42 units)
Sold out

SP1 Rear Bumper Yam SM-12530

Regular price ¥8,400 JPY
SP1 Rear Button S-D S/M 03-202

Regular price ¥3,200 JPY

In stock (195 units)
Sold out

SP1 Rear Footrest Kit S-D SM-12642

Regular price ¥14,200 JPY
Sold out

SP1 Rear Footrest Kit S-D SM-12643

Regular price ¥13,700 JPY
SP1 Rear Latch S-D SM-12508

Regular price ¥1,800 JPY

In stock (714 units)
SP1 Rear Lh Latch S-D SM-12588L

Regular price ¥2,100 JPY

In stock (1093 units)
SP1 Rear Rh Latch S-D SM-12588R

Regular price ¥2,700 JPY

In stock (806 units)
Sold out

SP1 Rear Shock Pol 04-235

Regular price ¥8,200 JPY
Sold out

SP1 Rear Suspension Spring - Left SM-04353L

Regular price ¥4,100 JPY
Sold out

SP1 Rear Suspension Spring - Right SM-04353R

Regular price ¥4,800 JPY
SP1 Rear View Mirror Pair SM-12268

Regular price ¥6,300 JPY

In stock (760 units)
SP1 Rear View Mirror- Left Universal Black RV-12011L

Regular price ¥4,300 JPY

In stock (499 units)
SP1 Rear View Mirror- Right Universal Black RV-12011R

Regular price ¥4,300 JPY

In stock (238 units)
SP1 Rear View Mirrors A/C SM-12761

Regular price ¥26,000 JPY

In stock (650 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