Halltech Systems Flex-Lock 4.5-Inch to 4-Inch Reducing Hump Hose - Hose with 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 for its KillerBee-series intake bridges and the throttle-body end at 4 inches ID for the stock C6 throttle body. This configuration includes both Halltech's added PCV hole and the PCV elbow fitting, making it the complete PCV-equipped version for compatible installations that require the PCV connection through the throttle-body hose.
Halltech's Flex-Lock design is engineered to do more than simply reduce one connection diameter to another. 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 intake bridge and throttle body. The hose measures 3 inches long with a nominal 0.142-inch wall thickness and includes two stainless steel hose clamps. With both the PCV opening and Halltech PCV elbow fitting included, this configuration gives you the hose and PCV hardware together.
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: Halltech PCV elbow fitting included
- PCV Fitting Material: Carbon-fiber-infused nylon
- PCV Fitting Design: Smooth double-barrel interior with barbed CAI end and smooth PCV-line end
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
- Halltech PCV elbow fitting included
- PCV fitting uses carbon-fiber-infused nylon construction
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 size transition with a hose engineered specifically for the intake-to-throttle-body connection instead of relying on a generic reducer.
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 combines reinforced construction with the controlled flexibility needed between the intake bridge and throttle body. The result is a purpose-built transition hose engineered for this demanding engine-bay connection.
Compliant Hump Section Accommodates Engine Movement
The compliant hump section is a key part of the Flex-Lock design. Instead of forcing the intake bridge and throttle body into a completely rigid connection, the hump allows controlled flex as the engine moves under torque. This gives the connection room to move where necessary 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 to increase engagement with the intake bridge and throttle body. Combined with the two included stainless steel hose clamps, these ridges add positive mechanical grip at each connection point rather than relying solely on clamp pressure against a smooth inner hose surface.
PCV Hole and Halltech PCV Fitting Included
This configuration includes both Halltech's added PCV hole in the throttle-body hose and the optional PCV elbow fitting. Halltech's proprietary PCV fitting is made from carbon-fiber-infused nylon and features a smooth double-barrel interior. The fitting is barbed on the cold air intake side and smooth on the PCV-line side. If your installation requires PCV capability through the H-4.5X4-RHH and you also need the fitting, this configuration provides both components together.
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 both the PCV hole in the hose and the Halltech 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 include both the PCV hole and PCV fitting?
Yes. This configuration includes Halltech's added PCV hole in the hose along with the Halltech PCV elbow fitting. The fitting is made from carbon-fiber-infused nylon with a barbed cold air intake end and smooth PCV-line end.
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 both the PCV hole and Halltech PCV elbow fitting for applications requiring the PCV connection through the hose. 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
