Halltech Systems Flex-Lock 4.5-Inch to 4-Inch Reducing Hump Hose - Hose with PCV Hole - No PCV Fitting Needed (2006 - 2013 Chevrolet Corvette C6 Z06 / 2008 - 2013 C6 LS3 / 2010 - 2013 Grand Sport) - H-4.5X4-RHH
Connect a Halltech KillerBee-series intake bridge to the stock C6 throttle body with the Halltech Systems Flex-Lock 4.5-Inch to 4-Inch Reducing Hump Hose H-4.5X4-RHH. Halltech sizes the intake end at 4.5 inches ID for its KillerBee-series intake bridges and the throttle-body end at 4 inches ID for the stock C6 throttle body. This configuration includes Halltech's added PCV hole in the hose but does not include the optional PCV elbow fitting, making it the right choice when you need the PCV opening but already have the appropriate fitting.
Halltech's Flex-Lock design goes beyond a basic silicone reducer by combining controlled flexibility with positive mechanical grip. The mandrel-formed hose features seven-layer Nomex-reinforced silicone construction, a compliant hump section designed to accommodate engine movement and torque, and internal grip ridges at both ends to increase engagement with the intake bridge and throttle body. The H-4.5X4-RHH measures 3 inches long with a nominal 0.142-inch wall thickness and includes two stainless steel hose clamps.
Specifications
- Manufacturer: Halltech Systems
- Part Number: H-4.5X4-RHH
- Product: Flex-Lock 4.5-Inch to 4-Inch Reducing Hump Hose
- Intake-Side ID: 4.5 inches
- Throttle-Body-Side ID: 4 inches
- Intake Compatibility: Halltech KillerBee-series intake bridges
- Throttle Body Compatibility: Stock C6 throttle body
- Hose Length: 3 inches
- Nominal Hose Thickness: 0.142 inch
- Construction: Seven-layer Nomex-reinforced silicone
- Design: Mandrel-formed reducing hump hose
- Grip Design: Internal grip ridges at each end
- Hump Section: Compliant design to accommodate engine movement and torque
- Hose Clamps: Two stainless steel hose clamps included
- PCV Hole: Included with this configuration
- PCV Fitting: Not included with this configuration
Features
- Transitions from a 4.5-inch Halltech KillerBee-series intake bridge to a 4-inch stock C6 throttle body connection
- Designed specifically for use with the stock C6 throttle body
- Halltech Flex-Lock design combines controlled flexibility with positive mechanical grip
- Seven-layer Nomex-reinforced silicone construction
- Compliant hump section accommodates engine movement and torque
- Internal grip ridges increase engagement at both ends of the hose
- Mandrel-formed construction
- 3-inch overall hose length
- Nominal 0.142-inch hose thickness
- Includes two stainless steel hose clamps
- PCV hole included in the hose
- No PCV elbow fitting included with this configuration
Connects a KillerBee Intake to the Stock C6 Throttle Body
The H-4.5X4-RHH is purpose-sized for C6 combinations using a Halltech KillerBee-series intake bridge with the stock throttle body. Its 4.5-inch intake-side ID matches the KillerBee-series bridge, while its 4-inch throttle-body-side ID fits the stock C6 throttle body. This creates the required reduction between the two components without relying on a generic reducer or an incorrectly sized coupler.
Seven-Layer Nomex-Reinforced Flex-Lock Construction
Halltech builds the H-4.5X4-RHH as a mandrel-formed hose using seven-layer Nomex-reinforced silicone construction. At 3 inches long with a nominal wall thickness of 0.142 inch, the hose is engineered specifically for the intake-to-throttle-body connection. Its reinforced construction provides a resilient connection while retaining the controlled flexibility needed in the engine compartment.
Compliant Hump Section Accommodates Engine Movement
The compliant hump section gives the Flex-Lock hose room to accommodate engine movement and torque instead of forcing the intake bridge and throttle body into a completely rigid connection. As the engine moves, the hump provides a controlled area of flexibility while maintaining the transition between the KillerBee intake bridge and stock C6 throttle body.
Internal Grip Ridges Increase Mechanical Engagement
Halltech incorporates internal grip ridges at both ends of the H-4.5X4-RHH. These ridges increase engagement with the intake bridge and throttle body, working with the two included stainless steel hose clamps to provide positive mechanical grip at each connection point instead of relying only on clamp pressure against a smooth hose interior.
PCV Hole Included - Use Your Existing PCV Fitting
This H-4.5X4-RHH configuration is supplied with Halltech's added PCV hole already provided in the hose. The optional PCV elbow fitting is not included because this version is intended for installations where the PCV opening is needed but an appropriate fitting is already available. You get the hose prepared for the PCV connection without purchasing another fitting you do not need.
Fitment
- 2006 Chevrolet Corvette C6 Z06
- 2007 Chevrolet Corvette C6 Z06
- 2008 Chevrolet Corvette C6 Z06
- 2009 Chevrolet Corvette C6 Z06
- 2010 Chevrolet Corvette C6 Z06
- 2011 Chevrolet Corvette C6 Z06
- 2012 Chevrolet Corvette C6 Z06
- 2013 Chevrolet Corvette C6 Z06
- 2008 Chevrolet Corvette C6 LS3
- 2009 Chevrolet Corvette C6 LS3
- 2010 Chevrolet Corvette C6 LS3
- 2011 Chevrolet Corvette C6 LS3
- 2012 Chevrolet Corvette C6 LS3
- 2013 Chevrolet Corvette C6 LS3
- 2010 Chevrolet Corvette C6 Grand Sport
- 2011 Chevrolet Corvette C6 Grand Sport
- 2012 Chevrolet Corvette C6 Grand Sport
- 2013 Chevrolet Corvette C6 Grand Sport
Fitment Note: This reducing hump hose is intended for the applicable Halltech KillerBee-series intake bridge paired with the stock C6 throttle body. Vehicle year and model alone do not determine compatibility. This configuration includes the PCV hole in the hose but does not include the optional PCV elbow fitting.
FAQs
What throttle body does the Halltech H-4.5X4-RHH fit?
The 4-inch end is designed to fit the stock C6 throttle body, while the 4.5-inch end fits Halltech KillerBee-series intake bridges. The reducing hose provides the required transition between those two connection sizes.
Does this H-4.5X4-RHH come with the PCV hole already added?
Yes. This configuration includes Halltech's added PCV hole in the hose. The PCV elbow fitting is not included, making this version appropriate when you need the PCV opening but already have the fitting required for your installation.
Get Your Halltech Flex-Lock Reducing Hump Hose from Beefcake Racing
Connect your Halltech KillerBee-series intake to the stock C6 throttle body with the H-4.5X4-RHH Flex-Lock Reducing Hump Hose from Beefcake Racing. This configuration arrives with the PCV hole in the hose and without an additional PCV fitting. For help confirming your intake, throttle body, or PCV configuration before ordering, contact us at sales@beefcakeracing.com or call 1-855-827-7223.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
