Two-Stroke Engine Rebuilds — Pakenham, Victoria
2-Stroke Engine Rebuilds
Top ends, bottom ends, crank rebuilds and replating — measured, not guessed. Built in Pakenham, and you don’t have to be local: send the engine in from anywhere in Australia and we’ll handle it from the crate up.
★★★★★5.0 on Google15 reviewsAustralia-wide send-in100+ engines rebuiltAll work in-houseQuoted before we start
100+Engines rebuilt
4–8 WeeksTypical turnaround
Australia-WideSend your engine in
MeasuredNot guessed
Why It Matters
Most Two-Strokes Don’t Fail. They Get Assembled Badly.
A two-stroke is a simple engine with very little tolerance for guesswork. Squish clearance, ring end gap, crank runout, case sealing, bearing fit — get any of them wrong and the motor either never makes the power it should, or it lets go on the third ride.
We measure everything and record it. Bore, squish, deck height, runout, end gap — all checked against spec, written down, and handed to you with the engine. If a component is out, you find out before it goes back together, not after.
That’s the difference between a rebuild and a reassembly, and it’s why people freight engines to us rather than drop them at the closest shop.
Not sure whether yours needs a top end or a full rebuild? Send photos of the piston and bore, or just describe how it’s running. We’ll tell you honestly which one it needs.
What We Do
Top End Or Full Rebuild
Two jobs, two very different prices. Knowing which one you need is most of the decision.
Top End
Top End Rebuild
The maintenance job. Done at the right interval it keeps a two-stroke alive almost indefinitely, and it’s a fraction of the cost of leaving it.
- Cylinder inspected, measured and honed or replated
- New piston, rings, pin, clips and bearing
- Head checked, decked if needed, squish set to spec
- Power valve assembly stripped, cleaned and reset
- Base and head gaskets, exhaust seals renewed
- Reeds inspected and replaced if needed
Bottom End
Full Engine Rebuild
Cases split and everything inside renewed. This is the job when the crank is notchy, the seals are weeping, or it’s just done enough hours that you want it fresh.
- Cases split, cleaned and vapour blasted
- Crank rebuilt with new rod kit, or replaced
- Crank trued and runout measured to spec
- All main bearings and seals renewed
- Gearbox and shift mechanism inspected
- Clutch, basket and primary drive assessed
- Complete top end as above
Scope
What’s Included, And What Isn’t
Included In Every Rebuild
- Full strip, clean and inspection
- Written measurement record against spec
- Vapour blasting of cases and castings
- New bearings, seals and gaskets
- Assembly to factory torque and clearance
- Leak-down test before it leaves
- Photo record of the build
Quoted Separately
- Cylinder replating where the bore is past limit
- Crank replacement if it can’t be trued
- Port work and performance modification
- Carburettor rebuild and rejetting
- Ignition, stator and CDI components
- Gearbox internals if damaged
- Freight to and from the workshop
Everything in the right-hand column gets its own line on the quote after inspection. Nothing appears on the invoice that you didn’t approve first.
Australia-Wide
Send Your Engine In From Anywhere
You don’t need to be near Pakenham. An engine out of the frame freights cheaply and safely, and we rebuild motors sent in from every state.
01
Tell Us What You’ve Got
Year, make, model, hours if you know them, and what it’s doing. Photos of the piston and bore help if you’ve already had the head off.
02
Crate It And Send It
Drain the fluids, block the intake and exhaust, and pack it so it can’t move. We’ll talk you through it and tell you the cheapest freight option before you book anything.
03
Strip, Measure, Quote
It comes apart, everything is measured against spec, and you get a written quote with photos before a single part is ordered.
04
Rebuild
Cases blasted, crank trued, bearings and seals renewed, top end assembled to clearance. Four to eight weeks depending on parts and replating.
05
Back In The Crate
Leak-tested, photographed, packed and freighted back with the measurement record and notes on running it in.
In-House
Everything Under One Roof
Vapour Blasting On Site
Cases and castings come up factory-fresh without removing material. Most workshops send this out, which adds weeks.
Crank Work
Rebuilt with new rod kits and trued to spec, with runout measured and recorded rather than eyeballed.
Replating Coordination
When a bore is past honing we manage the replating and the piston match, so you’re not chasing three suppliers yourself.
Parts Network
Years of contacts for vintage Japanese two-stroke parts. We’ve sourced components for motors most people wrote off.
Engines We Rebuild
Vintage Through To Current
Japanese and European two-strokes, 65cc through to the big-bore 500s. If it’s a two-stroke, we’ve most likely had one apart.
What Riders Say
5.0 On Google, 15 Reviews
★★★★★
“Kane serviced and did the top end on my rm250. Nothing short of fantastic. Customer service was best in the bike trade.”
Haris Harbas — Google Review★★★★★
“I have a 1985 DR 250 which nobody wants to touch. Kane did not hesitate to help so I took it to his pristine workshop.”
Clinton Richards — Local Guide, Google ReviewGet Started
Book A Rebuild
Pick a day to drop the bike or engine in, tell us the make, model and hours, and describe what it’s doing. We’ll confirm and quote after inspection.
Engine Rebuild Enquiry
Choose “Top End Rebuild” or “Full Engine Rebuild”. Sending it in from interstate? Pick any date and note it in the message — we’ll sort the freight with you before you book anything.
Questions
Two-Stroke Rebuild Questions
How often should a two-stroke top end be rebuilt?
It depends on capacity and how hard it’s ridden. A 125 raced hard may want a piston every 15 to 20 hours, while a 250 or 500 ridden on trails can go considerably longer. The honest answer is that hours are a guide and measurement is the decider — if the bore is at the top of tolerance or compression is down, it’s due regardless of the clock.
Do I need a top end or a full rebuild?
If the crank feels smooth, the seals aren’t weeping and the gearbox shifts cleanly, a top end is usually enough. If there’s play in the big end, the motor has been running on a lean jet, or it’s done a lot of hours, the cases need splitting. Send photos or describe the symptoms and we’ll tell you which it is.
Can I send my engine in from interstate?
Yes. An engine out of the frame freights cheaply and we rebuild motors sent in from across Australia. Get in touch before you book freight and we’ll talk you through crating it and finding the cheapest carrier.
How long does a two-stroke engine rebuild take?
Four to eight weeks typically, depending on parts availability and whether the cylinder needs replating. Replating adds time because the cylinder goes out and comes back before assembly. We give you a realistic timeline with the quote.
What does a two-stroke engine rebuild cost?
It depends on capacity, condition and whether the cylinder needs replating or the crank needs replacing. We strip and measure first, then give you a written quote with photos before any parts are ordered, so you know the number before you commit.
Can you replate my cylinder?
We manage replating as part of the rebuild and match the piston to the finished bore, so you’re not coordinating between a plater, a parts supplier and a workshop yourself.
Can you do port work while it’s apart?
Yes. If you want more than stock, the time to do it is while the cylinder is off and the motor is in pieces. Tell us how you ride and what you’re chasing and we’ll advise what’s worth doing and what isn’t.
Which two-strokes do you rebuild?
Japanese and European, vintage through to current — Honda CR, Kawasaki KX, Suzuki RM, Yamaha YZ including the big-bore 500s, plus KTM, Husqvarna, Gas Gas, Beta and Sherco. Vintage and rare motors are a specialty.
Get Your Motor Sorted
Drop it in, or crate it and send it. 18 Rapid Way, Pakenham VIC 3810, Monday to Friday 9am–5pm — and Australia-wide by freight.
0423 963 402