PROX – Bill's Exhausts

PROX Inner Clutch Hub 18.4334

Regular price $127⁰⁰ NZD

Very low stock (1 unit)
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PROX Crankshaft Bearing/Seal Kit - Kawasaki 23.CBS43051

Regular price $188⁰⁰ NZD
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PROX Wheel Spacer Kit - Front - CR80/85 26.710001

Regular price $35⁰⁰ NZD
PROX Wheel Spacer Kit - Front - Honda 26.710004

Regular price $74⁰⁰ NZD

In stock (6 units)
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$3.00 off

PROX Wheel Spacer Kit - Front - YZ80/85 26.710061

Sale price $53⁰⁰ NZD Regular price $56⁰⁰
PROX Wheel Spacer Kit - Front - Honda 26.710005

Regular price $55⁰⁰ NZD

In stock (5 units)
PROX Wheel Spacer Kit - Front - Yamaha 26.710069

Regular price $74⁰⁰ NZD

Low stock (2 units)
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PROX Wheel Spacer Kit - Front - Honda 26.710007

Regular price $27⁰⁰ NZD
PROX Wheel Spacer Kit - Front - Yamaha 26.71007

Regular price $41⁰⁰ NZD

Low stock (3 units)
PROX Wheel Spacer Kit - Front - Yamaha 26.7101

Regular price $46⁰⁰ NZD

Very low stock (1 unit)
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$3.00 off

PROX Wheel Spacer Kit - Front - Yamaha 26.710073

Sale price $17⁰⁰ NZD Regular price $20⁰⁰
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$5.00 off

PROX Wheel Spacer Kit - Front - KTM 26.710086

Sale price $29⁰⁰ NZD Regular price $34⁰⁰
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PROX Wheel Spacer Kit - Front - KTM 85 SX 26.710083

Regular price $27⁰⁰ NZD
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PROX Wheel Spacer Kit - Front - KTM 26.710089

Regular price $30⁰⁰ NZD
$2.00 off

PROX Wheel Spacer Kit - Front 26.710087

Sale price $55⁰⁰ NZD Regular price $57⁰⁰

Low stock (3 units)
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$2.00 off

PROX Wheel Spacer Kit - Front - KTM 26.710085

Sale price $15⁰⁰ NZD Regular price $17⁰⁰
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PROX Wheel Spacer Kit - Front - KTM 26.710088

Regular price $18⁰⁰ NZD
$2.00 off

PROX Wheel Spacer Kit - Front 26.710029

Sale price $27⁰⁰ NZD Regular price $29⁰⁰

Very low stock (1 unit)
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$9.00 off

PROX Wheel Spacer Kit - Front - Kawasaki 26.710031

Sale price $54⁰⁰ NZD Regular price $63⁰⁰
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PROX Wheel Spacer Kit - Front - Suzuki 26.710055

Regular price $62⁰⁰ NZD
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PROX Wheel Spacer Kit - Front - Kawasaki KX125/250 1999-2003 26.710028

Regular price $44⁰⁰ NZD
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PROX Wheel Spacer Kit - Front - Suzuki 26.710058

Regular price $79⁰⁰ NZD
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PROX Wheel Spacer Kit - Rear - Honda CR80/85 26.710012

Regular price $44⁰⁰ NZD
PROX Wheel Spacer Kit - Front - Suzuki DR-Z 400 26.710057

Regular price $32⁰⁰ NZD

Very low stock (1 unit)
PROX Wheel Spacer Kit - Rear - Honda 26.710015

Regular price $63⁰⁰ NZD

Low stock (3 units)
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$12.00 off

PROX Wheel Spacer Kit - Rear - Honda 26.710013

Sale price $69⁰⁰ NZD Regular price $81⁰⁰
$4.00 off

PROX Wheel Spacer Kit - Rear - Honda 26.710014

Sale price $77⁰⁰ NZD Regular price $81⁰⁰

Low stock (3 units)
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PROX Wheel Spacer Kit - Rear - Yamaha 26.710079

Regular price $70⁰⁰ NZD
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$3.00 off

PROX Wheel Spacer Kit - Rear - Yamaha 26.710076

Sale price $44⁰⁰ NZD Regular price $47⁰⁰
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PROX Wheel Spacer Kit - Rear - Yamaha 26.710081

Regular price $70⁰⁰ NZD
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$2.00 off

PROX Wheel Spacer Kit - Rear - Yamaha 26.71008

Sale price $70⁰⁰ NZD Regular price $72⁰⁰
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PROX Wheel Spacer Kit - Rear - Yamaha 26.710099

Regular price $70⁰⁰ NZD
PROX Wheel Spacer Kit - Rear 26.710084

Regular price $55⁰⁰ NZD

Low stock (2 units)
PROX Wheel Spacer Kit - Rear - Kawasaki 26.710036

Regular price $53⁰⁰ NZD

Very low stock (1 unit)
PROX Wheel Spacer Kit - Rear - Kawasaki 26.710041

Regular price $74⁰⁰ NZD

Low stock (4 units)
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PROX Wheel Spacer Kit - Rear 26.710042

Regular price $74⁰⁰ NZD
PROX Wheel Spacer Kit - Rear - Suzuki 26.710048

Regular price $74⁰⁰ NZD

Very low stock (1 unit)
$3.00 off

PROX Wheel Spacer Kit - Rear - Suzuki RM125/250 26.710049

Sale price $63⁰⁰ NZD Regular price $66⁰⁰

Very low stock (1 unit)
PROX Wheel Spacer Kit - Rear - Suzuki 26.710051

Regular price $74⁰⁰ NZD

Very low stock (1 unit)
PROX Wheel Spacer Kit - Rear 26.710102

Regular price $55⁰⁰ NZD

In stock (7 units)
Sold out
$3.00 off

PROX Wheel Spacer Kit - Front 26.710024

Sale price $27⁰⁰ NZD Regular price $30⁰⁰
PROX Wheel Spacer Kit - Front 26.710103

Regular price $63⁰⁰ NZD

In stock (11 units)
Sold out
$1.00 off

PROX Wheel Spacer Kit - Front 26.710105

Sale price $70⁰⁰ NZD Regular price $71⁰⁰
PROX Fork Protectors - 130 mm 40.FSP1304450

Regular price $41⁰⁰ NZD

In stock (5 units)
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$11.00 off

PROX Fork Seal/Wiper Kit - 36 mm ID x 48 mm OD x 8 mm T 40.S36488P

Sale price $63⁰⁰ NZD Regular price $74⁰⁰
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PROX Wheel Spacer Kit - Front - Yamaha 26.710104

Regular price $44⁰⁰ NZD
PROX Fork Protectors - 360 mm 40.FSP3604450

Regular price $42⁰⁰ NZD

Low stock (4 units)
PROX Fork Seal/Wiper Kit - 43 mm ID x 54 mm OD x 11 mm T 40.S435411

Regular price $93⁰⁰ NZD

In stock (12 units)
PROX Fork Seal/Wiper Kit 40.S354710P

Regular price $74⁰⁰ NZD

In stock (8 units)
PROX Fork Seal/Wiper Kit - 35 mm ID x 48 mm OD x 11 mm T 40.S354811

Regular price $74⁰⁰ NZD

In stock (7 units)

Let customers speak for us

from 1287 reviews

Great overall!

Looks amazing, obvious weight benefit, great sound but loud.
Installation is relatively easy but instructions could be improved

Laurent

10/13/2026

Austin RS22 140mm - 2026 KTM 990 RCR RS22 DUAL UNDERSEAT BOX DELETE TITANIUM EXHAUST SYSTEM AR101

Best looking exhaust out right now

Best looking exhaust out right now. The picture posted isn’t quite correct. It’s a lot smaller way better looking. Exactly what I was looking for. It sounds amazing. It sounds contemporary and mean!

Terrell Houser

10/08/2026

Austin 2026 KTM 990 RCR SLIP-ON dB COMPLIANT & RACE EXHAUST SYSTEMS AR102

Bill’s delivered

Bill’s delivered. Build quality is outstanding, fit and finish is perfect. No problem at all installing. Sound is louder than oem but not too much to upset the neighbors. Well worth the Arrow build time wait. Thank you.

Melissa Zinser

09/23/2026

Arrow Exhaust Arrow Veloce Exhaust System Triumph Daytona 660 2024 71507VAN

Shippng took a while due to convolution of shipping to California

Shippng took a while due to convolution of shipping to California. But product was in excellent shape and install was easy

K.R. Liu

09/02/2026

AKRAPOVIC Slip-On Line Muffler - Carbon - BMW S1000XR 2020-2025 2026 /M1000XR 2024 S-B10SO13-HZC/1

Easy install except the springs

Easy install except the springs. Buy a 10” spring puller. Sounds great. Nice welds. Typical Akrapovic quality and Bill’ Exhaust was best price and quick shipment.

Stuart Moulton

08/14/2026

IN STOCK AKRAPOVIC Header - Titanium S1000RR 2021-2024 2025 2026 E-B10E8 1812-0401

Everything I expected it to be and more

Everything I expected it to be and more. Install was easy and it sounds great

Noah Crampton

08/05/2026

Arrow header GSXR 1000 R 2017-2025 Stainless Steel Racing Collector 71660mi

I love the exhaust!

I love the exhaust and it sounds AWESOME! Fits perfectly so cutting or trimming required.

Jeremy Anderson

07/30/2026

Professional fast and friendly. I love Bills Exhaust.

The new exhaust fits and looks absolutely perfect. Also the Best performing exhaust you can buy for this Triumph 765. Purchased from a great supplier. Bill’s exhaust are an excellent group to work with.

Anonymous

07/22/2026

LEOVINCE LV-14 R Exhaust System - 3-into-1 - Black - Street Triple 765 R/RS 15608BU

Outstanding product

The Italian made seat cover is made with pride, so the end result is an outstanding product. Thank you Bills Exhaust for the quick turnaround and support on this item.

Marcello Laudato

07/16/2026

Tappezzeria Italia Kawasaki Ninja ZX10RR 2021-2025 Seat Cover in Red and Black

Fast shipping and a great price.

Fast shipping and a great price

Sean Williams

AKRAPOVIC Race Muffler - Titanium ZX-10RR /R 2021-2025 2026 S-K10SO28-ASZTBL 1811-4142

Beautiful muffler

Beautiful muffler. Easy install. Perfect sound. High quality throughout. Completely changed the look of the bike. Love it. Expertly packaged in foam rubber so it arrived unscratched. Thanks Bill's.

David Johnson

07/14/2026

LEOVINCE GP One Slip-On Muffler SCL500 2023-2024 15131FBU 1811-4693

Sounds amazing and looks really good

You guys saved my butt with this, I couldn't get it in my area since one of the shops were having tariff issues and not ordering arrow at the moment. But you guys did everything plus more of ordering it checking it and shipping it off to me. I didn't want to go with any other exhaust and you guys delivered. I will forever appreciate you guys and recommend you in the future.

Marco Fraire

07/12/2026

71005VAN Arrow Racing Veloce Full Exhaust for Triumph Street Triple 765 RS 24-25

Great customer service and delivery I love my

Great customer service and delivery I love my exhaust!!!

Marissa Castro

07/10/2026

LEOVINCE GP Corsa Evo Full Exhaust - Z125 2017-2024 3394EU 1810-2679

After quite possibly the longest 42 day wait of my life my complete m4 exhaust was finally in my

After quite possibly the longest 42 day wait of my life my complete m4 exhaust was finally in my possession. Worth the wait and I’d order from bills again.

Daniel Trombley

06/10/2026

M4 Exhaust Carbon Fiber Slip-On 2017-2025 2026 Z900 KA9004

⭐️⭐️⭐️⭐️⭐️ Premium quality and perfect fit for the S1000RR

Installed on my 2025 BMW S1000RR and the fitment was absolutely perfect.

The titanium finish, weld quality, and overall construction are excellent. Sound is deeper, cleaner, and slightly louder than stock without being excessive.

After the first ride, the titanium started developing the beautiful blue heat coloration that Akrapovic is known for, which gives the exhaust an even more premium appearance.

I had previously tested an aftermarket replica, and while it was surprisingly good, the genuine Akrapovic stands out in overall refinement, finish quality, and how the titanium ages with heat cycles.

If you’re looking for an OEM-quality upgrade that complements the BMW perfectly, this exhaust is worth it.

Bill’s Exhausts also had the best price I could find, with fast shipping, no tax charged to Texas, and free shipping, making the purchase experience even better.

Highly recommended.

Francisco Pereira

06/04/2026

AKRAPOVIC Titanium Slip-On Line Muffler S1000R / S1000RR /M 1000 RR 2020- 2026 S-B10SO11-CBT 1811-3739