DarkSide Custom Harleys

DarkSide Custom Harleys We are the one stop shop for all your motorcycle servicing, diagnostic & customisation needs. You’re guaranteed to ride out faster than you rode in...

Our fully qualified technicians & expertly equipped workshop will ensure your pride & joy is always looked after. Formed out of the garage of their families Inner-West home, Darkside Custom Harleys has grown into a motorbike enthusiast’s dream. Our specialty is turning our customer’s bike from a factory standard to a stunning piece of custom machinery. Located in Silverwater, our professional work

shop offers a full range of services including custom performance enhancement, servicing and repairs.

DARKSIDE V rod head gaskets have already been flying off the shelves. Truth is i got my delivery and they havnt even mad...
31/08/2026

DARKSIDE V rod head gaskets have already been flying off the shelves. Truth is i got my delivery and they havnt even made it to the shelf as most are pre sold for packages.
We aimed to step up the quality and thats what we did.
Our collaboration with Nitto Performance Engineering has been nothing short of successful in our aim to produce high quality products for all our performance parts.
These will be on our website very soon. But for now just call to place ordered.
Available in 30thou & 40thou thick.
4.134 bore sizing only

30/08/2026

DARKSIDE 2INTO1 HITS THE DYNO!!!
After Custom fabricating a big inch 2 into 1 Exhuast system with a new style muffler system, we bolted it up to a 2025 cvo streetglide VVT.
We pulled a solid 139hp & 140ft torque, making these results on the same output level we have gotten from our very recommended kromewerks 2 into 2 full system. We managed to hold torque for longer in the rpm range with our system which was a win.
So far its our toughest sounding vvt engine while retaining the power output.
This engine consists of :
Screaming eagle wedge intake
Tts 195 cam package
Tts tuner module
DARKSIDE exhaust
DARKSIDE tune

25/08/2026

Can't forget this sexy girl.
300 rear
Twin disc 26inch front
Drive side brake
Ben Lawrence turbo setup
Forged engine with Darkhorse Motor Company crankshaft
Anything the customer asked us for, we made happen. Including widening that breakout rear guard, all in house.

ANNOUNCEMENT Approximately 2 weeks left to be able to book in for any work to be done this year. We have been trying our...
23/08/2026

ANNOUNCEMENT
Approximately 2 weeks left to be able to book in for any work to be done this year.
We have been trying our best to plan job time lines for the rest of 2026 & we feel we may have reached capacity. So please try to organise yourself if your planning to get work done & reach out asap.
Doing this allows us to still have time to supply Performance packages & take on custom dyno tunes for multiple workshops.
Our loyal customers will be able to reach out for maintenance & emergency repairs even though bookings have stopped.
Thankyou for your support & stay tuned for some cool builds in the works.

Www.darksidecustomharleys.com.au

DID YOU KNOW????We do more then just build some crazy bikes......Such as:- Blue slip inspections ( cars & bikes )- Pink ...
20/08/2026

DID YOU KNOW????
We do more then just build some crazy bikes......
Such as:
- Blue slip inspections ( cars & bikes )
- Pink slip inspections ( cars & bikes )
- Insurance repairs
- Log book servicing
So when the time comes, keep us in mind & know you can get it all done in one place. Just makes life simpler.

Hopefully not to much longer and this mean machine will hit the dyno for a run in tune then home to its owner. Haltech R...
17/08/2026

Hopefully not to much longer and this mean machine will hit the dyno for a run in tune then home to its owner.
Haltech
Rotrex

2026 Breakout over in the custom fab station. - custom rear fender- custom seat- custom side mount plate - custom drive ...
16/08/2026

2026 Breakout over in the custom fab station.
- custom rear fender
- custom seat
- custom side mount plate
- custom drive side brake setup
- custom exhaust
- twin disc 26inch front end & much more.
We are 50/50 on selling this one or keeping it for the summer to ride. But will consider offers as we can change some things to your liking during the build if needed.
Feel free to reach out on 0421314192 or
[email protected]

2026 CVO ROADGLIDE STIt didnt take long to have this absolutely brand new CVO up on a lift about to get some work. What ...
11/08/2026

2026 CVO ROADGLIDE ST
It didnt take long to have this absolutely brand new CVO up on a lift about to get some work.
What an amazing bike that will soon pack some serious hp to go with it.
Stay tuned!

10/08/2026

137hp From just a cam package.
These Gen 2 M8s are super consistent, which makes guaranteeing hp numbers when planning builds much easier.
This girl is running a cr485 camshaft kit, screaming eagle wedge filter, freedom 2into2 & tuned with a pv3.




Www.darksidecustomharleys.com.au

09/08/2026

CUSTOM BIG BOY STAINLESS EXHAUST!
Nathan just finished up this beautiful 2into1 exhaust for the Lowrider St. We always tick all the boxs when we custom fab. We take into consideration things like, noise, quality, looks, ground clearence without ever sacrificing performance.
You may notice how big we step up the headers initially. Some will say to do it differently, but we have done multiple dyno tests with multiple different combinations & have still found the best balance for hp & torque.

Www.darksidecustomharleys.com.au

Address

126 Carnarvon Street, Silverwater
Sydney, NSW
2128

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 5pm
Wednesday 8:30am - 5pm
Thursday 8:30am - 5pm
Friday 8:30am - 5pm
Saturday 8:30am - 12pm

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