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4K ENGINE TUNING PARTS
1 1430cc
79ÿ forged high compression piston
ÿ90,000*Ring, circlip, and pin included

4K Engine Parts

Forged ÿ Machined
HighManufacturingmethod Typecompression ÿ79 ÿ18×50mm

PistonLightweight type 36.0mm

This lightweight racing piston is made from high-strength forged material and is machined to create

diameter Pin diameter x

1.0×1.0×2.0mm 253g IN

the ideal shape. The combination of cutting-edge machining and low-friction reinforced piston rings,

length Pin height

3.5mm

such as a taper pin hole to reduce the burden on the pin boss and a three-dimensional profile to reduce
friction loss even in the high-temperature, high-speed range, allows you to achieve high power and highPiston ring thickness

EX 3.5mm 4K Genuine (fullPiston weight Valveflow) 4K Genuine

recess depth Connecting rod used Crank used

revolutions at the same time.

*Can be used with 3K engines.

4K Metal Head Gasket

4K F780-Reinforced Metal

This bead-type head gasket secures the surface pressure by providingpress-formed beads around the combustion chamber and around theF780-Reinforced metal (STD size)

water and oil holes, which require a high level of sealing. The layout is•F780 Reinforced Main Metal SET¥17,500

appropriately distributed by the width and height of the beads, making•F780 WPC reinforced main metal SET¥25,300

it an indispensable part for tuning engines.

Bore diameter Thickness Price76ÿ 80.5ÿ 0.8mm ¥18,000 76ÿ 80.5ÿ
1.0mm ¥18,000 76ÿ 80.5ÿ 1.2mm¥19,000 76ÿ 80.5ÿ 1.5mm ¥20,00076ÿ 80.5ÿ 2.0mm ¥23,000 76ÿ 80.5ÿ
2.5mm ¥26,000 76ÿ 80.5ÿ 3.0mm¥28,000*Shared with 3K engines

4K reinforced timing chain•F780 Reinforced Connecting Rod Metal SET¥14,000•F780 WPC reinforced connecting rod metal SET¥20,240

4K Thrust Metal (genuine equivalent)*Shared with 3K engines

STD(0.25us, 0.5us)¥1,370¥1,660Undersize

4K Chromoly lightweight flywheel/reinforced bolts
4K Chromoly lightweight flywheel

3K 4K reinforced timing chain

The most effective way to improve the response of the 4K engine is to reduce

Double chain type ¥9,000

the weight of the flywheel. We have adopted SCM material, which has excellent
durability, and designed it to be thin while maintaining high strength.

4K-II reinforced timing chain¥50,000¥54,000•STD type (3.9kg)•R type (3.2kg)

Single chain type ¥11,500*Lightweight hole type

4K ARP Reinforced Flywheel Bolt SET(Strength standard 200,000PSI, tightening torque 130N•m)ÿFeatures This reinforced chain has a relatively thin 5-10ÿ insoluble manganese phosphate film on the metal surface,which is then uniformly and evenly permeated into the material surface. This provides four times the wear resistance!

Reinforced bolts from ARP, USA, reduce bolt loosening during sports

It keeps the chain in the best condition over a long period of time by preventing valve timing delays caused bydriving or high revolutions, increasing safety.

chain elongation. It is also resistant to the burning and galling that often occurs in the chain's sliding parts, and helps

Set of 6 ¥8,000

maintain smooth movement and reduce friction loss.

4K Valve Spring Washer

4K reinforced valve springs/retainers
3K 4K reinforced valve springs[Material] Chromium molybdenum steel[Manufacturing method] Machined

4K valve spring stepped seat

Valve lift 13mm compatible Set

This stepped spring seat is machined from chromium for double typeload 43k Full load 108k (12mm)

valve springs. It fits perfectly on the double springs and stabilizes the valvesprings.

ÿ16,000/SET

ÿ8,000/SET
4K Valve Spring Washer

3K 4K Lightweight titanium retainer

ÿ26,000/SET

The installation length of the valve spring is an important point for
improving performance! By cutting the seat, the protrusion can be(Weight: Titanium 6.8g / Genuine 18.5g)

extended, and the load loss due to the valve spring sagging can becompensated for by placing a stepped seat under it.
[Material] SK material*Titanium coating enhances wear resistance.

Thickness 0.5mm/1.0mm ÿ400/1 sheet[Heat treatment] Tufftride*Shared with 3K engines

73*The listed price is the base price. Consumption tax will be added separately.