Hybrid Racing 75mm RBC K Series Throttle Body

75mm K-Series Throttle Body for RBC/RRB/RRC/RBB Bolt Patterns

The 75mm throttle body is designed for K-Series RBC, RRB, RRC, and RBB intake manifolds and is intended for drive-by-cable applications. It maintains TPS calibration alignment by mirroring the OEM Honda TPS design and features a rotated IACV port to improve clearance between the radiator and wiring harness during installation.

Compatibility and installation notes: This unit is a direct bolt-on for RBC/RRB/RRC/RBB manifolds. It is not designed for donor-car drive-by-wire configurations. For RRC manifolds, idle control is not provided; a block-off solution is required to seal the idle-air path during installation.

Engineering, durability, and performance

Constructed from 6061-T6 aluminum, the throttle body uses staked butterfly bolts to prevent loosening over time. A custom-fit thermal insulation gasket reduces heat transfer from the manifold, helping maintain consistent throttle response. Inside, double-sealed roller bearings ensure smooth, repeatable operation, complemented by dual stainless-steel throttle return springs for reliability in varied conditions.

Fitment, mounting, and flexibility

The rotor offers three cable mounting positions, enabling compatibility with K-swapped EG, EK, DC2, RSX, and EP3 applications. It is designed to pair with standard 3-inch intake couplers, providing a secure and optimized airflow path. The throttle cable bracket has been refined for better fitment and hood clearance in K-swapped builds; it uses high-strength steel with zinc plating to resist corrosion and maintain alignment over time.

Dealer stocking options

Available SKUs and contents for dealer fulfillment:

• HYB-THB-01-05 — Throttle Body
• HYB-BUN-01-TB1 — Add MAP Plug Only
• HYB-BUN-01-TB2 — Add IACV Plug Only
• HYB-BUN-01-TB3 — Add MAP & IACV Plugs

Contents summary: Throttle Body, Add MAP Plug Only, Add IACV Plug Only, Add MAP & IACV Plugs

Notes: MAP sensor, IACV, and intake manifold may be shown in images for reference; these items are not included with the throttle body.

Usage considerations for your shoppers

Your customers typically pursue this part to increase airflow on RBC/RRB/RRC/RBB-based builds, supporting both naturally aspirated and boosted configurations. It is well-suited for K-swapped platforms (EG, EK, DC2, RSX, EP3) where a 75mm bore aligns with the chassis’ intake path and provides a clear route for improved air delivery. Dealers can position this throttle body as a robust, high-flow option that preserves calibration integrity and offers long-term durability for street and track applications.