A compact Blacklist velocity stack with a smooth bellmouth, a beaded hose neck and recessed BL branding. It brings the same styling as our N/T 98 stack to a smaller 4.75-inch connection.
The neck measures 4.75 inches outside diameter (120.65 mm) and connects end-to-end to a matching turbo neck using a separate nominal 4.75-inch ID silicone coupler and two hose clamps.
Details
One complete 3D-printed velocity stack
4.75 in / 120.65 mm neck OD
38 mm neck length; 69.92 mm overall height
161.59 mm bellmouth entry ID; 165.59 mm maximum lip OD
112.65 mm neck flow bore; 4 mm nominal wall
Retention bead, rolled lip, recessed BL emblem and Blacklist wordmark
What is included
One physical printed stack. Silicone coupler, hose clamps, filter and turbocharger are sold separately.
Fitment
Check your turbo neck diameter and available clearance before ordering. This is a dimensional fitment part, with no specific turbo model compatibility established. Images and the interactive 3D model show the actual R1 CAD geometry; physical fit, temperature suitability and clamp retention have not yet been verified for this size.
