Halltech Systems Flex-Lock 4.5-Inch to 4.25-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-4.5X4.25-RHH
Connect a Halltech KillerBee-series intake bridge to a Nick Williams 103 throttle body with the Halltech Systems Flex-Lock 4.5-Inch to 4.25-Inch Reducing Hump Hose H-4.5X4.25-RHH. The 4.5-inch intake-side ID is sized for Halltech's KillerBee-series intake bridges, while the 4.25-inch throttle-body-side ID fits the Nick Williams 103 throttle body. This configuration includes both Halltech's added PCV hole in the hose and the PCV elbow fitting, giving you the components needed when PCV capability is required at this connection.
Halltech's Flex-Lock design is engineered to provide more than a basic diameter transition. The mandrel-formed hose uses seven-layer Nomex-reinforced silicone construction, a compliant hump section to accommodate engine movement and torque, and internal grip ridges at each end to increase engagement with the throttle body and intake tube. Measuring 3 inches long with a nominal 0.142-inch wall thickness, the H-4.5X4.25-RHH also includes two stainless steel hose clamps. With the PCV hole and Halltech PCV elbow fitting included in this configuration, it provides a complete solution for compatible installations requiring the PCV connection through the throttle-body hose.
Specifications
- Manufacturer: Halltech Systems
- Part Number: H-4.5X4.25-RHH
- Product: Flex-Lock 4.5-Inch to 4.25-Inch Reducing Hump Hose
- Intake-Side ID: 4.5 inches
- Throttle-Body-Side ID: 4.25 inches
- Intake Compatibility: Halltech KillerBee-series intake bridges
- Throttle Body Compatibility: Nick Williams 103 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 4.25-inch Nick Williams 103 throttle body connection
- 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 features carbon-fiber-infused nylon construction
Built for a KillerBee Intake and Nick Williams 103 Throttle Body
The H-4.5X4.25-RHH is purpose-sized for the transition between a Halltech KillerBee-series intake bridge and a Nick Williams 103 throttle body. The 4.5-inch intake-side ID fits the KillerBee-series bridge, while the 4.25-inch throttle-body-side ID fits the Nick Williams 103 throttle body. That gives you the required reduction in a hose engineered specifically for this intake-to-throttle-body connection instead of relying on a generic reducer.
Seven-Layer Nomex-Reinforced Flex-Lock Construction
Halltech builds the Flex-Lock hose with seven layers of Nomex-reinforced silicone. The hose is mandrel formed and measures 3 inches long with a nominal wall thickness of 0.142 inch. This construction creates a resilient transition between the intake system and throttle body while providing the controlled flexibility needed in an engine compartment.
Compliant Hump Section Accommodates Engine Movement
The H-4.5X4.25-RHH incorporates a compliant hump section so the connection can accommodate engine movement and torque. Rather than making the intake bridge and throttle body behave like one completely rigid assembly, the hump provides a controlled area of flexibility while maintaining the connection between the two components.
Internal Grip Ridges Add Mechanical Engagement
Internal grip ridges at each end of the Flex-Lock hose increase engagement with the intake bridge and throttle body. Combined with the two included stainless steel hose clamps, these ridges provide additional mechanical grip at the connection points instead of relying solely on clamp pressure against a smooth hose interior.
PCV Hole and Halltech PCV Fitting Included
This configuration is the complete PCV-equipped version of the H-4.5X4.25-RHH. Halltech's added PCV hole is already provided in the hose, and the PCV elbow fitting is included. Halltech manufactures its proprietary PCV fitting from carbon-fiber-infused nylon with a smooth double-barrel interior. One end is barbed for the cold air intake connection, while the other is smooth for the PCV line. If your installation requires PCV capability through the throttle-body hose and you also need the fitting, this configuration gives you both pieces 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 a Nick Williams 103 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-4.5X4.25-RHH fit?
The 4.25-inch end is designed to fit a Nick Williams 103 throttle body, while the 4.5-inch end fits Halltech KillerBee-series intake bridges. The reducing design provides the correct transition between those two connection sizes.
Does this H-4.5X4.25-RHH include everything needed for the PCV connection at the hose?
This configuration includes both Halltech's added PCV hole in the throttle-body hose and the Halltech PCV elbow fitting. The fitting is made from carbon-fiber-infused nylon and features a barbed end for the cold air intake connection and a smooth end for the PCV line.
Get Your Halltech Flex-Lock Reducing Hump Hose from Beefcake Racing
Connect your Halltech KillerBee intake to a Nick Williams 103 throttle body with the H-4.5X4.25-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 at 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.
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