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Aprilia RS125 Cylinder Re-Sleeve Service

Aprilia RS125 Rave 2 Power Valve Hole Drilling Service

Aprilia RS125 Rave 2 Power Valve Hole Drilling Service


Price: 15.00 (18.00 Including VAT at 20%)


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Aprilia RS125 Cylinder Re-Sleeving Service

Aprilia RS125 Cylinder Re-Sleeving Service

Here you will find information about Re-sleeving Relining Aprilia RS 125 Cylinder Barrel

It's no secret that most of today's high performance moto-x, motorcycle, ATV's, watercraft engines are using various coatings on their cylinder bore. These coatings include Nickasil, ceramic compsite, and chrome.

The main reason why manufacturers use this process is primarily cost. You see in the old day's manufacturers had to cast an iron sleeve, machine it, then put it into a mould and cast an aluminium cylinder around the sleeve, then machine the top and bottom face of the cylinder and match up the ports then bore and hone. Then the manufacturers had to supply dealers with over size pistons & rings etc.

With a Coated cylinder they have to cast the cylinder then apply the coating direct to the bore, there are no over sizes pistons to make and keep in stock this is much easier for the manufacture. It was reported to be better as it gave more power for more power which is not true, the other myth is you can run a tighter piston to bore clearance but this is simply not true the 1988 YZ125 had a factory fitted cast iron sleeve and they switched to a coated bore in 1989 and they both had the same piston to bore clearance!

But after all this the cylinder still wears out

Many things promote cylinder and piston wear, Dirt entering the carburettor, pre-ignition, detonation, overheating, incorrect jetting, leaking head gasket, poor quality oil, not bringing the engine up to temperature before riding. Just to name a few.

When your coated cylinder is worn or damaged it can't be re bored because the coating is very thin. At this point you have three options:

1. Re-coat the cylinder ( See Our Cylinder Re-coating)

2. Buy a new factory cylinder (Way to expensive in most cases)

3. Re-sleeve the cylinder.

When we re-sleeve the cylinder, it's fitted with a custom chrome molly iron cylinder sleeve. The sleeve will maintain all factory-porting specs, or in the case of a "race" ported cylinder it will retain the race porting. If the cylinder fitted with a sleeve and wears out you simply have it bored and fit a new oversize piston, infact if you have suffered a seize you can just hone it out, if you seize a coated bore it tends to pull the coating off rendering the cylinder scrape.

From The Start to the Finish Re-sleeving Process:

Your Aprilia RS125 cylinder barrel will stamped with a serial number, this is to help identify your cylinder and to make sure there is no mix up with other customers cylinders! We will then strip all bolts and power valves (if it came with any) clean and bored out the cylinder to make room for the new sleeve.

Making The Cylinder Sleeve

We Start Off With a Billet of Cast Iron from which we will make the new sleeve; we use a precision lathe to make the sleeve which is a "Top Hat" type. The outer diameter is precision ground to + 0.15mm bigger than the cylinder this is so the sleeve will be an interference fit. The bore of the sleeve is left 0.75mm under the finished bore size.

By now the cylinder will be having its ports mapped and transferred onto the new sleeve, this is to ensure you get the same porting as before.

With the sleeve ported and ready it's fitted into the cylinder, we do this by heating up the cylinder in a purpose made oven for 15 minutes, this allows the cylinder to expand so we can drop in the new sleeve, it is then put under the press and allowed to cool.

Once cooled the ports are then hand blended in to the cylinder to give the smoothest possible flow. The cylinder is then vapour blasted to give it that new clean look. We then machine the top face of the cylinder to make sure it is 100% flat to provide a good gasket seal.

It's then bored and honed to suit the piston that will be used and cleaned again before its ready to go back to you as good as new.

Please Choose Your Collection Date Below.

Please Note Collection Will Be During The Day Time I.E. 9 Am To 5 Pm Please Make Sure There Is Someone At The Collection Address. Collection charges will be applied at the checkout


Price: 120.00 (144.00 Including VAT at 20%)


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Aprilia RS125 Mitaka Piston Kit

Aprilia RS125 Mitaka Piston Kit

Mitaka Piston kit to fit a Aprilia RS125 / AF1 ROTAX 122 & 123 type Engines

This is a Mitaka Piston kit STD type 2 rings, made in Taiwan but of very good quality.

Piston kit contains piston, piston rings, gudgeon pin and 2 circlips.

Please Note Our Kit comes with the "Riken" Racing Piston Rings & Not The Cheap Piston Rings Some Other Sellers Are Offering

The piston has a coated piston skirt for lower friction,this piston is suitable for road or race use.

Please Choose Piston Size
  • 53.96mm
  • 53.97mm
  • 53.98mm
  • 53.99mm
  • 54.00mm
   


Price: 34.03 (40.84 Including VAT at 20%)


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Aprilia RS125 Wiseco Piston

Aprilia RS125 Wiseco Piston

Wiseco Piston kit to fit a Aprilia RS125 / AF1 ROTAX 122 & 123 type Engines

This is a Wiseco Piston kit made in The USA, The Piston is Forged For Better Strength.

Piston kit contains piston, piston rings, gudgeon pin and 2 circlips.

This Piston Is Suitable For Road And Racing Use

Choose Grade
  • Piston Size 53.95
   


Price: 126.00 (151.20 Including VAT at 20%)


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Aprilia RS125 Vertex Piston kit Twin Ring Std Type

Aprilia RS125 Vertex Piston kit Twin Ring Std Type

Vetex Piston Kit For The Aprilia RS125

This Piston Is A Direct Replacment For The Std Item With 2 Piston Rings

Vertex Pistons Are Made In Italy With A Molybdenum Coating,

Please Choose Piston Size
  • 53.97mm Vertex A Grade
  • 53.98mm Vertex B Grade
  • 53.99mm Vertex C Grade
  • 54.00mm Vertex D Grade
  • 54.01mm Vertex E Grade
   


Price: 71.50 (85.80 Including VAT at 20%)


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Aprilia RS125 Wossner Piston Kit Std Twin Ring

Aprilia RS125 Wossner Piston Kit Std Twin Ring

Replacement Wossner Piston To Fit The Aprilia RS125 Fits All Years And Both 122 and 123 Rotax Engine.

Wössner pistons are manufactured from a high yield 4032 alloy which has low expansion under temperature. This allows closer piston to bore clearances reducing piston noise. Wössner pistons also feature a unique graphite based coating on the skirts which aids the bedding in procedure.

Please Choose Piston Size
  • 53.96mm Wossner B Grade
  • 53.97mm Wossner C Grade
  • 53.98mm Wossner D Grade
  • 53.99mm Vertex E Grade
   


Price: 85.54 (102.65 Including VAT at 20%)


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Aprilia RS125 Vertex Race Piston Kit Single Ring

Aprilia RS125 Vertex Race Piston Kit Single Ring

Vetex Piston Kit For The RS125 Race Piston Single Ring

This Piston Is A Direct Replacment For The Std Item With 1 Piston Ring, Really Only For Race Use !

Vertex Pistons Are Made In Italy With A Molybdenum Coating,

extending the coating.

Please Choose Piston Size
  • 53.97mm Vertex A Grade
  • 53.98mm Vertex B Grade
   


Price: 64.99 (77.99 Including VAT at 20%)


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Aprilia RS125 Mitaka Piston Single Ring

Aprilia RS125 Mitaka Piston Single Ring

Mitaka Single Ring Mitaka Piston For The RS125 Fits All Years And Both Rotax 122 + 123

It Comes With A Coated Skirt For Lower Friction

Available in a choice of grades

Please Choose Piston Size
  • 53.97mm
  • 53.98mm
  • 53.99mm
   


Price: 42.50 (51.00 Including VAT at 20%)


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Aprilia Top End Gasket Kit Rotax 122 Athena

Aprilia Top End Gasket Kit Rotax 122 Athena

Top End Gasket Kit For The Aprilia RS125 Rotax 122 Type 1997-2010

This Kit Is Made In Italy By Athena And Is A Better Quality One Than The Budget One We Sell Which Is Made In Taiwan. "Why is it better i hear you say" Well the gaskets are made from the same materiel & in the same factory as the original aprilia ones, the gasket material is better than the Taiwanese one and fits much nicer.


Price: 17.01 (20.41 Including VAT at 20%)


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Aprilia Top End Gasket Kit Rotax 122 Budget

Aprilia Top End Gasket Kit Rotax 122 Budget

Aprilia RS125 Top end gasket kit for Rotax 122 type engines, From 1997-2007

Kit contains 3 base gaskets, Inner and outer O-rings for the cylinder head, Reed gasket, power valve gasket, and exhaust gasket.

Made In Taiwan
Price: 12.16 (14.59 Including VAT at 20%)


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Aprilia RS125 Small End Bearing

Aprilia RS125 Small End Bearing

This will fit both the Rotax 122 and 123 Motor, Also Fits The Polini Big Bore Piston
Price: 4.25 (5.10 Including VAT at 20%)


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Aprilia Rotax 122 Small End Bearing Genuine Aprilia Part

Aprilia Rotax 122 Small End Bearing Genuine Aprilia Part

This Is A Genuine Aprilia Small End Bearing.

Aprilia Part Number AP0932028


Price: 14.34 (17.21 Including VAT at 20%)


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People who bought this item also bought:
1. Aprilia RS125 Carb Main Jet Dellorto 6mm
2. Aprilia RS 125 Mitaka Big Bore Kit 140cc



Customer Reviews

  Best quality  Simply the best quality =)   (15/11/2012) Virtanen - Finland





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