PROGRESSIVE SUSPENSION

PROGRESSIVE SUSPENSION 412 Series Shock - 12" - Heavy Duty - Black 412-4081B

Regular price ¥59,900 JPY

In stock (5 units)
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PROGRESSIVE SUSPENSION 412 Series Shock - 12" - Heavy Duty - Chrome 412-4081C

Regular price ¥54,300 JPY
PROGRESSIVE SUSPENSION 412 Series Shock - 13.5" - Heavy Duty - Black - FLH 412-4078B

Regular price ¥59,900 JPY

In stock (20 units)
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PROGRESSIVE SUSPENSION Shock - 412 Cruise Series - Chrome 412CRZ-4064C

Regular price ¥69,900 JPY
PROGRESSIVE SUSPENSION 944 Ultra Touring - Standard 944-4002UT

Regular price ¥151,300 JPY

In stock (11 units)
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PROGRESSIVE SUSPENSION Shocks - 412 Cruiser Series - Black - 14.25" - Standard 412-4059B

Regular price ¥59,900 JPY
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PROGRESSIVE SUSPENSION Shocks - 412 Cruiser Series - Black - 14.25" - Heavy Duty 412-4058B

Regular price ¥54,300 JPY
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PROGRESSIVE SUSPENSION 944 Ultra Low - Standard 944-4001UL

Regular price ¥137,400 JPY
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PROGRESSIVE SUSPENSION Shock - 412 Cruise Series - Black 412CRZ-4064B

Regular price ¥63,500 JPY
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PROGRESSIVE SUSPENSION 944 Ultra Low - Heavy-Duty 944-4019UL

Regular price ¥151,300 JPY
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PROGRESSIVE SUSPENSION 465 Series Shock - Black 465-5040B

Regular price ¥117,400 JPY
PROGRESSIVE SUSPENSION 422 Series Shocks with Rap - Chrome - Standard 422-4103C

Regular price ¥151,100 JPY

In stock (18 units)
PROGRESSIVE SUSPENSION 422 Series Shocks with Rap - Chrome - Standard 422-4104C

Regular price ¥154,100 JPY

In stock (20 units)
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Heavy-Duty - 13.5" 444-4073B

Regular price ¥135,600 JPY

In stock (12 units)
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Standard - 13.5" 444-4074B

Regular price ¥135,600 JPY

In stock (20 units)
Sold out

PROGRESSIVE SUSPENSION 412 Series Shock - 12" - Standard - Black - XG 412-4402B

Regular price ¥54,300 JPY
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PROGRESSIVE SUSPENSION 412 Series Shock - 12" - Standard - Chrome - XG 412-4402C

Regular price ¥54,300 JPY
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PROGRESSIVE SUSPENSION 412 Series Shock - 12" - Heavy Duty - Chrome - XG 412-4403C

Regular price ¥54,300 JPY
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PROGRESSIVE SUSPENSION 412 Series Shock - 13" - Standard - Black - XG 412-4404B

Regular price ¥54,300 JPY
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PROGRESSIVE SUSPENSION 412 Series Shock - 13.5" - Standard - Black - XG 412-4406B

Regular price ¥54,300 JPY
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PROGRESSIVE SUSPENSION 412 Series Shock - 12" - Heavy Duty - Black - XG 412-4403B

Regular price ¥54,300 JPY
PROGRESSIVE SUSPENSION Front 429 Series Shock - Black - 15.7" 429-1000

Regular price ¥102,000 JPY

In stock (6 units)
PROGRESSIVE SUSPENSION Shocks - 412 Cruiser Series - Black - 14.25" - Standard 412-4260B

Regular price ¥59,900 JPY

In stock (6 units)
Sold out

PROGRESSIVE SUSPENSION Front 429 Series Shock - Black - 16.25" 429-1010

Regular price ¥95,400 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - Standard - 12.50" 490-1001

Regular price ¥127,200 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - Standard - 13.00" 490-1004

Regular price ¥127,500 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - Standard - 13.50" 490-1002

Regular price ¥129,400 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - Standard - 12.00" 490-1005

Regular price ¥123,100 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - Standard - 13.00" 490-1007

Regular price ¥123,100 JPY
PROGRESSIVE SUSPENSION 490 Series Shock - Black - Heavy-Duty - 12.00" 490-1006

Regular price ¥123,100 JPY

Very low stock (1 unit)
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - Heavy-Duty - 13.00" 490-1008

Regular price ¥123,100 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - 13.60" 490-1011

Regular price ¥123,100 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - 14.25" 490-1013

Regular price ¥123,100 JPY
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PROGRESSIVE SUSPENSION 490 Series Shock - Black - 13.50" 490-1012

Regular price ¥123,100 JPY
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Standard - 11" 444-4245B

Regular price ¥135,600 JPY

In stock (15 units)
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Heavy-Duty - 11" 444-4246B

Regular price ¥135,600 JPY

In stock (7 units)
Sold out

PROGRESSIVE SUSPENSION 970 Series Piggyback Shocks - Black - 13.50" 970-1009B

Regular price ¥217,100 JPY
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Heavy-Duty - 12" 444-4250B

Regular price ¥135,600 JPY

Low stock (3 units)
PROGRESSIVE SUSPENSION 444 Series Shock - Chrome - Standard - 11.5" 444-4247C

Regular price ¥135,600 JPY

Low stock (2 units)
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Standard - 11.5" 444-4247B

Regular price ¥135,600 JPY

Low stock (3 units)
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Standard - 12" 444-4249B

Regular price ¥135,600 JPY

Very low stock (1 unit)
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Super-Duty - 13" 444-4076B

Regular price ¥135,600 JPY

In stock (20 units)
PROGRESSIVE SUSPENSION 444 Series Shock - Black - Super-Duty - 13.5" 444-4077B

Regular price ¥135,600 JPY

In stock (7 units)
PROGRESSIVE SUSPENSION 944 Ultra Touring - Super-Duty 944-4071UT

Regular price ¥151,300 JPY

In stock (7 units)
Sold out

PROGRESSIVE SUSPENSION 490 Series Shock - Black - Standard - 13.50" 490-1015

Regular price ¥123,100 JPY
PROGRESSIVE SUSPENSION 465 Series Shocks - Black - Standard - 13.5" 465-1184B

Regular price ¥129,600 JPY

In stock (9 units)
PROGRESSIVE SUSPENSION 465 Series Shocks - Black - Standard - 12.6" 465-1186B

Regular price ¥129,600 JPY

In stock (8 units)
PROGRESSIVE SUSPENSION 465 Series Shocks - Black - Standard - 13.1" 465-1185B

Regular price ¥129,600 JPY

In stock (8 units)
PROGRESSIVE SUSPENSION 465 Series Shocks - Black - Standard - 12.2" 465-1187B

Regular price ¥129,600 JPY

In stock (20 units)
PROGRESSIVE SUSPENSION 465 Series Shocks with Rap - Black - Standard - 13.5" 465-5043B

Regular price ¥173,200 JPY

In stock (5 units)

Let customers speak for us

from 676 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