Halltech Systems Flex-Lock 4.5-Inch to 4-Inch Reducing Hump Hose - Hose without PCV Hole - No PCV Fitting Needed (2006 - 2013 Chevrolet Corvette C6 Z06 / 2008 - 2013 C6 LS3 / 2010 - 2013 Grand Sport) - H-4.5X4-RHH
Make the connection between your Halltech KillerBee-series intake bridge and 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 and without a PCV elbow fitting, making it the correct choice when your setup does not require PCV capability through the throttle-body hose.
Rather than using a basic silicone reducer, Halltech engineered the Flex-Lock hose to combine controlled flexibility with positive mechanical grip. Its mandrel-formed, seven-layer Nomex-reinforced silicone construction incorporates a compliant hump section to accommodate engine movement and torque, while internal grip ridges at both ends 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 a complete intake-to-throttle-body connection.
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: Not included or needed 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
- No PCV hole in this configuration
- No PCV elbow fitting included or needed 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. The reducing design creates the required transition between those two connection sizes without requiring a generic adapter or oversized 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 as the transition between the intake bridge and throttle body. The Flex-Lock design combines the strength of its reinforced construction with the flexibility needed at a connection exposed to normal engine movement.
Compliant Hump Section Accommodates Engine Movement
The hump section is an important part of the Flex-Lock design. Rather than creating a completely rigid connection between the intake system and throttle body, the compliant section allows controlled flex as the engine moves under torque. This lets the hose absorb movement where necessary while maintaining the connection between the KillerBee intake bridge and stock C6 throttle body.
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 throttle body and intake tube. Those ridges work together with the two included stainless steel hose clamps to create a more secure connection, adding mechanical grip at both ends instead of relying solely on clamp pressure against a smooth hose interior.
No PCV Hole or PCV Fitting
This H-4.5X4-RHH configuration is supplied without Halltech's optional PCV hole and does not include a PCV elbow fitting. Halltech specifies that the added hole should be requested when PCV capability through the hose is required, with the PCV elbow fitting available separately as an option. This version is therefore intended for installations that do not require the PCV connection through this hose.
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 H-4.5X4-RHH configuration does not have the optional PCV hole and does not include a 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. If your C6 uses a larger aftermarket throttle body, verify the required throttle-body connection diameter before ordering.
Does this H-4.5X4-RHH include a PCV hole or PCV fitting?
No. This configuration is supplied without Halltech's optional PCV hole and without a PCV elbow fitting. Halltech specifies that the added hole should be requested when PCV capability through the hose is required.
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 is supplied without a PCV hole or PCV fitting for installations that do not require 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
