MSS Performance Engine Department
This is where we deal with the heart of your racing bike, from simple refreshes to BSB winning engine preparation we can service your needs. Our engineers are constantly developing new specifications to get that “little bit more” to make your job easier on track. This department has seen the largest growth over the years, with racing Teams and track day riders all seeking to get more performance and efficiency from their engines.
Engine Maintenance
Scheduled top end engine maintenance is essential when running a racing engine whether standard or tuned to ensure unnecessary wear to avoid extra expense due to engine failure! Let’s face it, the last thing you want to do is turning up to a race meeting and experiencing potential engine failure.
What’s included?
- Cylinder Leak down test
- Check valves and clearances
- Remove cylinder head and inspect, replace gasket
- Clean and cut valve seats
- Check Clutch and replace gasket
- Check spark plugs
- Remove Sump for visual gearbox inspection, replace gasket
- Oil & Filter using Genuine parts and recommended oil
Engine Refreshing
Full engine refreshing is something we always will recommend, its often ran at high RPM & pushed to the limit so regular servicing is always advised, preventing unnecessary wear and maintaining the power, depending on the engine spec we advise different service intervals.
See below what is included in a full engine refresh:
- Strip & Prep
- Check for Damage and wear on each component
- Deep Cleanse in the wash tank
- Clean and cut valve seats – All angles
- Check for True
- Relieve Camshaft Journals
- Measure & Plastigauge the crankshaft
- Reshim Gearbox
- Rework Gearbox Shafts
Engine Upgrading
When upgrading your engine, there are several components that can enhance performance — from camshafts and valve springs to thinner head gaskets, racing spark plugs, adjusted cam timing, head porting, and cylinder skimming. Every modification contributes to overall gains, and attention to detail matters.
To maximize the results, it’s important to ensure the entire package is optimised. This includes pairing engine upgrades with a free-flowing exhaust system, performance air filter, proper engine mapping, and the right electronic controls. All these elements work together to unlock the full potential of your engine build.
Cylinder Head Porting
If head porting is allowed within your regulations, head porting is the process of modifying the intake and exhaust ports in the cylinder head to improve airflow into and out of the combustion chamber.
- Increases Airflow Efficiency
- Reduces turbulence and resistance
- Improves combustion & exhaust flow.
Gearbox Undercutting
Motorcycle gearbox undercutting is a machining process applied to the engagement dogs on the gears to improve shifting performance and prevent gear slippage — especially under high load or during aggressive riding, like in racing.
- Positive gear engagement
- Improving reliability & durability under stress
- Smooth shifting