ADVANCED COOLING TECHNOLOGY WITH FACTORY RESERVOIR COMPATIBILITY AND SIGNIFICANT WEIGHT REDUCTION.

The Takumi Project DRL Turn-Flow Side Tank [Kiwame] Aluminum Radiator represents the next evolution in high-performance engine cooling. Engineered with DRL’s proprietary tube and fin technology and an innovative turn-flow side tank design, this radiator maximizes cooling efficiency while achieving substantial weight savings. The updated lightweight version now allows use of the factory reserve tank for a true bolt-on installation.

Product Highlights

🔄 INNOVATIVE TURN-FLOW SIDE TANK DESIGN
Unlike conventional downflow radiators that cool from top to bottom—underutilizing the core surface—the Kiwame’s turn-flow layout circulates coolant horizontally across the entire radiator surface. This maximizes heat dissipation and delivers superior cooling performance unattainable with standard designs.

🔧 FACTORY RESERVE TANK COMPATIBILITY – BOLT-ON INSTALLATION
The previous Kiwame radiator required relocation of the reserve tank due to its turn-flow layout. This updated version features a separate upper tank integrated alongside the side tank, allowing retention of the factory reserve tank position for a straightforward, direct bolt-on installation.

🏗️ ADVANCED DRL CORE TECHNOLOGY
DRL’s proprietary tube and fin design represents a significant engineering breakthrough:

• Narrower Tube Pitch: 6.4mm pitch (vs. conventional 9.6-10mm) creates approximately 1.5x more water channel space within the same core area

• Optimized Fin Design: Improved fin shape increases contact area with tubes for enhanced heat transfer

• Efficient Packaging: Superior cooling performance achieved with a slimmer 36mm core—eliminating need for thicker, heavier construction

⚖️ LIGHTWEIGHT UPDATED VERSION – SUBSTANTIAL WEIGHT SAVINGS
Compared to the conventional Kiwame radiator:

• Construction: 3-layer aluminum 48mm → 2-layer aluminum 36mm

• Weight: 5.5kg (conventional) → 4.7kg (DRL) – 0.8kg reduction

• Capacity: 3.5L → 3.0L

• All-aluminum construction with high-quality 36mm two-layer tubes

🔰 HANDCRAFTED RACING QUALITY
Each radiator is meticulously hand-welded by skilled craftsmen. The inlet/outlet pipes and mounting brackets are precision-machined to achieve both structural integrity and aesthetic excellence—a racing radiator that pursues beauty alongside performance.

Technical Specifications & Application

This is a handcrafted, high-performance aluminum radiator engineered for Subaru turbo models.

Key Details

• Product Name: DRL Turn-Flow Side Tank [Kiwame] Aluminum Radiator – Lightweight Updated Version

• Core Construction: All-aluminum, 2-layer, 36mm thickness

• Tube Pitch: 6.4mm (DRL proprietary technology)

• Weight: 4.7kg

• Coolant Capacity: 3.0L

• Layout: Turn-flow side tank design

• Reserve Tank: Compatible with factory reserve tank (no relocation required)

• Availability: Made to order (Delivery time: 1.5-2 months)

Vehicle Compatibility

• Subaru WRX STI: VAB

• Subaru Impreza: GRB, GVB

• Subaru WRX S4: VAG Requires specialized shop installation for proper air bleeding

• Subaru Levorg: VMG Requires specialized shop installation for proper air bleeding

Limited-Time Cooling Campaign

🎁 FREE LONG LIFE COOLANT – 8 LITERS INCLUDED
For a limited time, receive two 4-liter bottles of Takumi LLC with your radiator purchase:

• Option A: Takumi LLC – -30°C compatible (standard performance coolant)

• Option B: Kiwame LLC – -10°C compatible (premium formulation)

Important: Please indicate your preferred LLC type in the order comments section.