Key specs
- Bore Diameter
- 85.50 mm
- Compression Height
- 28.87 mm
- Forging Type
- Strutted
- Oil Ring Thickness
- 2.8 mm
- Piston Material
- 2618
- Piston Quantity
- 4
Have it fitted at Willys
We fit parts at our Oxley and Warana workshops. Order the part and we'll book you in, or ask for a fitted price first.
Get a fitting quote- Returns within 30 days
- 12 month warranty
- Fitting available
Wiseco Engine Internals Performance Pistons Mitsubishi 4G63 & 4G64 Forged Pistons
Wiseco Professional Mitsubishi 4G63T Piston Set of 4 - 85.50 mm Bore - 28.87 mm CH, -10.50 CC
- Fits Lancer Evolution I-VIII
- Fits Lancer Evolution IX
- Fits 4G63T
$1,746.68
Including GST
Available to order – usually ships in 2-3 weeks
or 4 interest-free payments of $436.67 with Afterpay on orders up to $2,000Zip and humm are available over the phone: (07) 5619 7869
Will it fit your vehicle?
| Make | Model | Series | Years | Engine |
|---|---|---|---|---|
| Mitsubishi | — | — | — | 4G63T |
| Mitsubishi | Lancer | Evolution I-VIII (1992-2005) | Oct 1992 – Mar 2005 | 4G63T |
| Mitsubishi | Lancer | Evolution IX (2005-2007) | Mar 2005 – Jun 2007 | 4G63T |
A dash means the listing does not narrow it down that far (for example no build dates are listed). Check with us if your vehicle was built near a model change.
Fitment listings are a guide. Not sure? Send us your rego or VIN and our team will check the part for your vehicle, before or after you order.
Check my fitmentor call(07) 5619 7869or text0485 885 957oremail us
Bore 85.50 mm · Compression height 28.87 mm · Volume -10.50 cc · Set of 4 · rings included · wrist pins included
Description
Set of 4 Wiseco Professional Series forged pistons for the Mitsubishi 4G63T: 85.50 mm (3.366 in) bore, 28.87 mm (1.137 in) compression height and -10.50 cc crown volume. Rings and wrist pins are included.
What’s in the box
- 4 forged pistons
- 4 wrist pins (22.00 mm / 0.866 in diameter, 9310 steel, floating)
- Piston ring set
Matching it to your Mitsubishi 4G63T
Wiseco list this set for a 88.00 mm stroke and 150.00 mm connecting rods.
Crown volume is quoted as -10.50 cc: Wiseco use a negative figure when the dish or valve reliefs add volume to the combustion chamber. Work out the compression ratio for your combination (chamber volume, gasket bore and thickness, deck clearance) before you order.
The bore size is the finished bore these pistons are made for, so have the block measured and then bored and honed to suit, with piston-to-wall clearance set to Wiseco’s figure for part K669M855AP.
Material: 2618 aluminium, the low-silicon alloy usually chosen for boosted and high-load engines (it needs more piston-to-wall clearance than 4032).
Forging: strutted design, with a coated skirt.
Ring grooves: 1.0 mm top, 1.2 mm second and 2.8 mm oil.
Boostline conrods listed for this engine family: Boostline Connecting Rod Kit | 4G63 7 Bolt 150mm | ARP2000, Boostline Connecting Rod Kit | 4G63 7 Bolt 150mm | ARP625+. This set is listed for 150.00 mm rods, so match the length.
More: Mitsubishi 4G63 & 4G64 forged pistons · all performance pistons · Wiseco
Wiseco part number: K669M855AP
Specifications
| Bore Diameter | 85.50 mm |
|---|---|
| Compression Height | 28.87 mm |
| Forging Type | Strutted |
| Oil Ring Thickness | 2.8 mm |
| Piston Material | 2618 |
| Piston Quantity | 4 |
| Piston Volume | -10.50 cc |
| Ring Set Included | Yes |
| Rod Length | 150.00 mm |
| Second Compression Ring Thickness | 1.2 mm |
| Skirt Coating | Yes |
| Stroke | 88.00 mm |
| Top Compression Ring Thickness | 1.0 mm |
| Wrist Pin Included | Yes |
| Wrist Pin Material | 9310 |
| Wrist Pin Outer Diameter | 0.866 in |
| Wrist Pin Style | Floating |
| Brand | Wiseco |
| SKU | WPC-K669M855AP |
| MPN | K669M855AP |
Warranty: 12 months from Willys Workshop
Sold and warranted by Willys Workshop. Parts carry our 12-month warranty against defects, from the date of purchase or installation (whichever is later), subject to any manufacturer terms and fair wear and tear (Terms & Conditions, clause 7.1(b)). This is in addition to your rights under the Australian Consumer Law, which cannot be excluded.
- 30-day change-of-mind returns on eligible items: unused, uninstalled and in the original packaging, with a Return Authorisation from us first. A 15% restocking fee applies and return postage is at your cost.
- Wrong fit: if a part covered by our Fitment Guarantee doesn’t fit, we pay the return freight both ways and there’s no restocking fee.
- Special-order or imported-to-order items, electrical parts, ECUs and tuners once registered, connected or flashed, parts that have been fitted or modified, and clearance items can’t be returned for change of mind. Your rights for faulty goods still apply.
- Refunds are made to your original payment method within 14 business days of us receiving and inspecting the return.
Full details: Returns & Refund Policy and Terms & Conditions.
Warranty claims are coordinated through Willys Workshop. Email sales@willysworkshop.com.au or call Warana (07) 5619 7869 / Oxley (07) 3377 3421 with your order number and a description of the issue.
Shipped Australia-Wide
- Dispatched from within Australia with tracking.
- Available to order – usually ships in 2–3 weeks.
- Freight is quoted after you order – we confirm the cost to your address before dispatch.
- Delivery usually takes 2–10 business days after dispatch, depending on your location.
- Need your tracking number? Once your order has shipped, email sales@willysworkshop.com.au with your order number and we’ll send you the carrier and tracking details.
Freight question? Call us on (07) 5619 7869.
