Wiseco Professional Toyota 22R Piston Set of 4 - 92.50 mm Bore - 38.95 mm CH, 24.70 CC
Wiseco Professional Toyota 20R Piston Set of 4 - 90.00 mm Bore - 1.533 in. CH, 24.70 CC
Wiseco Professional Toyota 22R Piston Set of 4 - 92.50 mm Bore - 38.95 mm CH, 24.70 CC
Wiseco Professional Toyota 22R Piston Set of 4 - 92.50 mm Bore - 38.95 mm CH, 24.70 CC

Key specs

Bore Diameter
92.50 mm
Compression Height
38.95 mm
Forging Type
Full Round
Oil Ring Thickness
2.8 mm
Piston Material
4032
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.

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Check fitment by rego or VIN
  • Returns within 30 days
  • 12 month warranty
  • Fitting available

Wiseco Engine Internals Performance Pistons

Wiseco Professional Toyota 22R Piston Set of 4 - 92.50 mm Bore - 38.95 mm CH, 24.70 CC

SKU WPC-K509M925MPN K509M925
  • Fits Hilux LN / RN
  • Fits Prado 70 Series
  • Fits 22R

$1,409.43

Including GST

Available to order – usually ships in 2-3 weeks

Available to order – usually ships in 2-3 weeks
Heavy / oversize item — freight quoted to your addressOrder now and we will confirm the exact delivery cost to your address before dispatch — no guessed freight, you only ever pay the real rate. Prefer a price first? Contact us for a freight quote.
Freight quoted after you order - we confirm the cost to your address before dispatch
Pick up from our workshops291 Cliveden Ave, Oxley (Brisbane) or 29 Production Ave, Warana (Sunshine Coast). Monday to Friday, 8am to 5pm.
Returns within 30 daysUnused and uninstalled, in the original packaging, with a return authorisation from us first. A 15% restocking fee applies and return postage is at your cost. Your Australian Consumer Law rights are not affected. Returns policy
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Will it fit your vehicle?

MakeModelSeriesYearsEngine
Toyota———22R
ToyotaHiluxLN / RN (pre-1997)Oct 1988 – Nov 199722R
ToyotaPrado70 Series (Bundera)1985 – 199222R

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 92.50 mm · Compression height 38.95 mm · Volume 24.70 cc · Set of 4 · rings included · wrist pins included

Description

Set of 4 Wiseco Professional Series forged pistons for the Toyota 22R: 92.50 mm (3.642 in) bore, 38.95 mm (1.533 in) compression height and +24.70 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, 5115 steel, floating)
  • Piston ring set

Matching it to your Toyota 22R

Crown volume is quoted as +24.70 cc: a positive figure means a dome that takes volume out of 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 K509M925.

Material: 4032 aluminium, the high-silicon alloy that grows less with heat than 2618 and suits street and mild performance engines.

Forging: full-round design, with a coated skirt.

Ring grooves: 1.0 mm top, 1.2 mm second and 2.8 mm oil.

More: all performance pistons · Wiseco

Wiseco part number: K509M925

Specifications

Bore Diameter92.50 mm
Compression Height38.95 mm
Forging TypeFull Round
Oil Ring Thickness2.8 mm
Piston Material4032
Piston Quantity4
Piston Volume24.70 cc
Ring Set IncludedYes
Second Compression Ring Thickness1.2 mm
Skirt CoatingYes
Top Compression Ring Thickness1.0 mm
Wrist Pin IncludedYes
Wrist Pin Material5115
Wrist Pin Outer Diameter0.866 in
Wrist Pin StyleFloating
BrandWiseco
SKUWPC-K509M925
MPNK509M925

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.

Complete the job

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