Citroën C2 and Saxo VTS 1.6L – Direct-to-Head 38mm Throttle Bodies (EFI) Performance Kits (TU5J4, TU5JP4, XU10J4RS)

Citroën C2 and Saxo VTS 1.6L & 2.0L – Direct-to-Head Throttle Bodies (EFI) Performance Kits (TU5J4, TU5JP4, XU10J4RS) Direct-to-Head Triple Housing Shaftless Throttle Bodies

Unlock superior performance with AT Power’s Direct-to-Head (DTH) Shaftless Twin Butterfly  38mm Throttle Body Systems. These Individual Throttle Bodies (ITBs) are designed to deliver exceptional airflow, throttle response, and tuning flexibility for motorsport and performance applications.

Compatible Engines:

• TU5J4 – 1.6L 16V (~100 hp)
  Citroën: Saxo VTS (Pre 2001, mainly non-VVT versions, ZX, Zsara (early models),
  Peugeot: 106 GTI, Peugeot 306 (1.6L trims), Peugeot 206 (early models).
• TU5JP4 – 1.6L 16V (~100–110 hp)
  Citroën: Saxo VTS (Late models), C2 VTS, C3 (early), Xsara, Berlingo,
  Peugeot: 206 (XS, Quiksilver, Roland Garros, etc.), Peugeot 207 (base 1.6 trims, early years), 307 (1.6 16V), Partner, 1007, 106 GTI (late)

Before placing your order, please ensure that the technical drawings match your engine’s inlet ports and that the throttle bodies will fit correctly, as engine specifications may vary or have been modified.

Key Features & Benefits:

• Patented Shaftless Butterfly Design: Features our innovative, patented shaftless butterfly valves with knife-edged blades, significantly improving induction airflow speed and enhancing engine performance. Eliminates central shaft to reduce turbulence, increasing airflow by up to 10% compared to conventional shafted ITBs
• Optimised 38mm Housings: Twin oval (TU5 series) housings CNC-machined from aircraft-grade billet aluminium for strength, weight savings, and thermal efficiency
• Bolt-On Compatibility: Pre-assembled to fit almost any TU5J4 / TU5JP4 (Citroën Saxo VTS)
• Full OEM Component Use: Each throttle body system is port-matched to OEM intake ports, ensuring seamless fitment to the cylinder head intake face.

Performance Advantages:

• Enhanced induction airflow and velocity
• Sharper throttle response and increased engine performance
• Ideal for motorsport applications, road use, long track, circuit racing or high-performance engine builds

Whether you’re building a track car, rally project, or street performance vehicle, AT Power’s Shaftless Twin Throttle Bodies deliver proven performance gains and unrivalled throttle response.

Kit Includes:

• Fully assembled throttle body set with plug-and-play installation
• SLS 3D-printed extension tubes (velocity stacks/runners) in black
• 40mm Billet aluminium ram pipes (trumpets)
• Linkage Assembly
• Rotary TPS Fitting with optional TPS

Complete your build. Sold Separately:

• AirFlow Synchrometer here.
• Megaflow Air Filter JC50/S/65 here.
• 3m Motorsport Cable here.
• Throttle Twin Housing – 1/8″ BSP to 5/16″ (8mm) Hosetail Fitting here.

Customisation Options Available:

We offer a comprehensive range of optional configurations and accessories to tailor the ITB to your specific setup:

• Billet Velocity Stacks / Runners / Extension Tubes: Multiple lengths available for optimal tuning
• Ram Pipes (Trumpets): Choice of lengths for airflow optimisation
• Optional injector brackets
• Make Power personal with anodised colour finishes to suit your setup

To Customise this product click here.

If you require something more bespoke, please contact us.

Important:

• ECU Compatibility and Tuning Required: Proper engine management system tuning is necessary for optimal operation and fuelling.
• Maps are supplied “as-is”. Professional dyno tuning is strongly recommended to ensure optimal performance and avoid potential engine damage.
• An Airflow Synchrometer (sold separately) is required for balancing

If you require something more bespoke, please contact us.

Motorsport Use Only! This product is designed for professional motorsport applications and must be installed by a qualified technician. If assistance is required, please contact AT Power’s sales team.