Halltech Systems Flex-Lock 4.5-Inch to 4-Inch Reducing Hump Hose - Hose without PCV Hole - PCV Fitting Included (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 to fit its KillerBee-series intake bridges and the throttle-body end at 4 inches ID to fit the stock C6 throttle body. This configuration is supplied without the optional PCV hole in the hose but includes the PCV elbow fitting.
Halltech engineered its Flex-Lock hose to provide more than a simple reduction in connection diameter. The mandrel-formed hose uses seven-layer Nomex-reinforced silicone construction, a compliant hump section designed to accommodate engine movement and torque, and internal grip ridges at each end to increase engagement with the throttle body and intake tube. The hose measures 3 inches long with a nominal 0.142-inch wall thickness and includes two stainless steel hose clamps. For owners who want the PCV fitting on hand but do not want the hose supplied with the PCV opening, this configuration combines the fitting with the unmodified hose.
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: Not included with this configuration
- PCV Fitting: 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
- Supplied without the optional PCV hole
- PCV elbow fitting included with this configuration
Connects a KillerBee Intake to the Stock C6 Throttle Body
The H-4.5X4-RHH is sized specifically 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 the 4-inch throttle-body-side ID fits the stock C6 throttle body. This purpose-built reducing design provides the required transition without relying on a generic reducer or an incorrectly sized throttle-body hose.
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 0.142-inch wall thickness, it is engineered specifically for the intake-to-throttle-body connection. The reinforced construction provides a resilient connection while retaining the controlled flexibility required between components in the engine compartment.
Compliant Hump Section Accommodates Engine Movement
The compliant hump is a key part of Halltech's Flex-Lock design. Engine movement and torque can place stress on a rigid intake connection, so the hump section allows the hose to flex where movement needs to be accommodated. This creates controlled compliance between the KillerBee intake bridge and stock C6 throttle body while maintaining the connection between them.
Internal Grip Ridges Add Positive Mechanical Grip
Halltech incorporates internal grip ridges at each end of the H-4.5X4-RHH to increase engagement with the intake bridge and throttle body. Combined with the two included stainless steel hose clamps, the ridges add mechanical grip at both connection points instead of relying solely on clamp pressure against a smooth inner hose surface.
PCV Fitting Included - Hose Supplied without PCV Hole
This H-4.5X4-RHH configuration includes the optional PCV elbow fitting, but the hose itself is supplied without the added PCV hole. Halltech specifically states that the added hole should be requested when PCV capability is needed through the hose. As configured here, the PCV fitting is supplied with the order but cannot be installed into the hose as delivered unless the appropriate opening is subsequently added.
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 elbow fitting but does not have the optional PCV hole in the hose.
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 transition required between these two connection sizes.
Can the included PCV fitting be installed in this hose as delivered?
No. This configuration includes the PCV elbow fitting, but the hose is supplied without Halltech's optional PCV hole. Halltech specifies that the added hole is required when PCV capability is needed through the hose, so the appropriate opening would need to be added before the supplied fitting could be installed in the hose.
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 includes the PCV fitting while leaving the hose without the optional PCV hole. For help confirming your intake, throttle body, or PCV configuration before ordering, contact us at sales@beefcakeracing.com or call 1-855-827-7223.
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