Description

RB26 HKS 2.8 Stroker Kit – Step 2 – 87mm – 21004-AN004

【Capacity Upgrade Kit】

For drivers who just need “more power and more torque”, HKS has designed a series of capacity upgrade kits to suit the characteristics of each engine. Increased displacement offers more torque at lower engine speeds and by using the highest quality materials, the durability required for high levels of tuning is achieved. Nickel-coated pistons which have strong anti-knocking properties combined with fully counterweighted crankshafts and high strength connecting rods (rods optional in some kits) combine to extract maximum performance from the turbocharger and increase torque.

【Capacity Upgrade Kit RB26DETT 2.8L KIT】

For RB users that require more low and mid-rpm torque, the RB26DETT 2.8L kit is ideal. Step Zero, Step 1, and Step 2 are available to suit the specifications of each user.

STEP2

Piston: Forged piston with Nickel plating for anti-knocking properties and top piston ring stability. Piston Skirt is molybdenum coated for friction reduction, clearance optimized and smoother bedding in new.
Connecting Rod: Used the forged material from high specification with H-beam design for maximum strength and durability. WPC shot peening also contributes for strengthening as well as preventing metal fatigue.
* Stock rods can also be used.
Crankshaft: Used the forged material from high specification and fully counterweighted for maximum balance at high rpm. Pin journals and center has been hollowed to lighten the rotating mass to improve the throttle response.
Best if used with GTIII-RS, GTIII-4R etc. (Target rpm is 9000rpm).

	HKS RB26DETT 2.8L KIT	Stock RB26DETT
Bore	φ87.0	φ86.0
Stroke	77.7mm	73.7mm
Displacement	2,771ml	2,568ml

【Capacity Upgrade Kit RB26DETT 2.8L Step 0】

In addition to the increased displacement by the effect of 2.8L, STEP ZERO is the best solution for engines that require a better response.
The target of maximum revolution is the best for stock or GT-SS turbine with greatly improved response.
The affordable price allows usage just for engine overhauling.

Features

<POINT-1>: It is optimized for target turbines and rpm. Although it is a full counter, the ultra-lightweight design achieves a quicker response than ordinary STEP1 or STEP2.
<POINT-2>: Full counter design decreases the load on metals. The pitch of both connecting rod ends are not changed as ordinary kits, and the stroke is adjusted by piston height. This design is less side pressure, less friction and more durable than other manufacturers’ 2.8L stroke kits that change the pitch between both ends.
<POINT-3>: Newly designed φ86.5 piston.
Piston bore can be selected depending on engine block condition for φ86.5 or φ87.0.
<POINT-4>: All MADE IN JAPAN (HKS in-house production).

Ultra lightweight full counter crankshaft

Select appropriate HKS 2.8L Kit from 3 types of the vehicle specification.

(Target Spec of each STEP.)

	Target RPM	Target Turbine
STEP ZERO	8000rpm	Stcok/GTIII-SS
STEP1	8500rpm	GTIII-RS
STEP2	9000rpm	GTIII-RS/GTIII-4R

“STEP ZERO” is recommended for stock or GTIII-SS turbine as more power cannot be output at more than 8,000rpm, and STEP ZERO has the best response.
Since the power output range of GTIII-RS is shifted to higher rpm than GTIII-SS, in order to have wider power output range, “STEP1” that has maximum rpm of 8500rpm is recommended. If budget allows, “STEP2” is recommended for better response.
For a turbine which power band shifts to a high speed range like GTIII-4R, to secure a wide power band range, “STEP2” is recommended since the engine can run up to 9000rpm with STEP 2.