"Nicosil" cylinder plating

History & Advantantages/Replating service/Prices

The History & Advantages

Electro-plated cylinders are now used on all competition engines and most road-bike engines. In the early days chrome plating was used but for the last approx. 15 years the bike manufacturers have used various types of nickel-silicon-ceramic-carbide or "Nicosil".
Approximately 50 years ago cylinders were cast-iron, over the next 20 years alloy-cylinders with cast-iron liners evolved. The introduction of chrome-plated alloy cylinders revolutionised two-stroke engine performance. The advantages were numerous, lower friction from the smoother harder finish and greatly reduced wear. The main advantage being at last the cylinder and piston were made of the same material and expanded at the same rate allowing far closer piston to bore clearances.The benefit of this is that the piston is able to transfer its heat to the cylinder and the cylinder to the water-cooling, keeping the piston cool and giving improved performance and greater reliability.
Don't let anyone fit a liner to your cylinder, you will be throwing away 30 years of race developement!

Nicosil replating service

When the cylinder plating is damaged either by wear or a seizure, we provide a replating service using diamond-hard "nicosil". Not only does this save the barrel but the "nicosil" is far superior to the original plating. No matter how badly damaged a barrel is we can repair it by welding and re-machining.
When sending a barrel for replating, please strip out all studs, power valves, etc, otherwise we charge extra to remove and refit them. Usually during the year we provide a one-to-two week turnaround service. All ports are dressed and chamfered and the barrel is ready for use.
If we are stripping out the studs and power valves, all studs and threads are cleaned and power valves are decoked, lubricated and re-timed where necessary.
We keep some barrels in stock, in particular NS125, NSR125, KMX125, K.R.I.S, RGV, RS 125, Mito, RS250, NS250, TZR"V" and some moto-x.
We carry a huge stock of piston kits, either genuine, or Prox/Mitaka or forged Wiseco racing pistons, also gasket sets, so that we can supply a complete one-stop service.

Prices

"Nicosil" replating per single cylinder = £95
Exchange welded/repaired/replated single cylinder = £125

Welding damaged cylinder = £30
Welding detonation and machining = £49
Welding broken cylinder skirt = £49
Remove/refit all studs = £10
Remove/refit studs and powervalves = £30

Please send heads/barrels to us by Post Office for Courier delivery please call us to arrange.

All prices are plus VAT