Home / Shop / Borla CrateMuffler BBC 396/402/427 ATAK 2.5 inch ID Offset/Center 14in x 4.35in x 9in Oval Muffler

Borla CrateMuffler BBC 396/402/427 ATAK 2.5 inch ID Offset/Center 14in x 4.35in x 9in Oval Muffler

SKU: BOR400852

Mufflers

BOR CrateMufflers...

Borla

Borla CrateMuffler BBC 396/402/427 ATAK 2.5 inch ID Offset/Center 14in x 4.35in x 9in Oval Muffler

SKU: BOR400852

Mufflers

BOR CrateMufflers...

LOW STOCK! Est Ship 3-5 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.

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Description

BORLA(r)'s CrateMuffler(r) is the world's first muffler purpose-built to optimize the sound & power of crate and custom built motors. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. This muffler is tuned for the Chevrolet Big Block 396/ 402/ 427 CID V8 engine family. The directional design provides the agressive ATAK(r) sound and will dramatically reduce, or eliminate drone on specified applications. Muffler Dimensions 2.5" Offset Inlet/ 2.5" Center Outlet, 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit and best of all, BORLA(r) stands behind every CrateMuffler(r) with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Product Overview

BORLA(r)'s CrateMuffler(r) is the world's first muffler purpose-built to optimize the sound & power of crate and custom built motors. This CrateMuffler(r) features the aggressive ATAK(r) sound. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. The directional design provides custom sound, tuned for each engine family and will dramatically reduce, or eliminate drone on specified applications. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit and best of all, BORLA(r) stands behind every CrateMuffler(r) with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Features and Benefits

CrateMufflers are tuned for specific engines
When installed on cataloged applications, they will reduce, or eliminate drone
Mufflers have directional flow. Outlet end has mounting bracket on it.

Product Details

Body Height (in.):	OEM
Body Height:	OEM
Body Length (in.):	OEM
Body Length:	OEM
Body Width (in.):	OEM
Body Width:	OEM
Construction:	All Welded
Description:	CrateMuffler; Offset/Center; 2.5 in.; 14 in. x 4.35 in. x 9 in. Case Body; For Stock BBC 396; ATAK Sound; T-304 Stainless Steel;
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Outside Diameter:	2.500 in.
Inlet Position:	Offset
Inlet Size (in.):	2.5
Inlet Type:	OEM
Main Piping Diameter:	2.500 in.
Material:	T-304 Stainless Steel
Muffler Count:	1
Off Road Use Only:	No
Outlet Outside Diameter:	2.500 in.
Outlet Position:	Center
Outlet Size (in.):	2.5
Outlet Type:	OEM
Overall Length (in.):	OEM
Overall Length:	OEM
Part Number:	bor400852
Position:	N/A
Prop 65 (C, R or CR):	CR
Prop 65 - Long Label:	WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov
Prop 65 - Short Label:	Proposition 65 Warning.JPG
Prop 65 Yes/No:	Yes
Shape:	Oval
Tip / Outlet Finish:	N/A
Title Extended:	CrateMuffler(r) Muffler Chevrolet Big Block 396/ 402/ 427 CID V8 Stock Output 2.5 in. Offset Inlet/ 2.5 in. Center Outlet ATAK(r) Part # 400852
Title:	CrateMuffler(r) Muffler Chevrolet Big Block 396/ 402/ 427 CID V8 Stock Output 2.5 in. Offset Inlet/ 2.5 in. Center Outlet ATAK(r)

Application Summary

24-26 Ford Mustang GT GT

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-16 02:08:23

Features

2.5" Offset Inlet/ 2.5" Center Outlet, 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length
CrateMuffler(r)s are tuned for specific engines
Mufflers have directional flow. Outlet end has mounting bracket on it.
When installed on cataloged applications, they will reduce, or eliminate drone

Specifications

Product Attributes - UPC: 808422008525
Product Attributes - Brand: Borla
Product Attributes - Notes: ATAK style muffler.
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Mufflers
Product Attributes - Case Shape: Oval
Product Attributes - Reversible: No
Product Attributes - Width (in.): 9.000 in.
Product Attributes - Outlet Style: Standard, without tip
Product Attributes - Product Line: Borla ATAK CrateMufflers
Product Attributes - Inlet Location: Offset
Product Attributes - Inlet Quantity: 1
Product Attributes - Muffler Finish: Natural
Product Attributes - Outlet Location: Center
Product Attributes - Outlet Quantity: 1
Product Attributes - Thickness (in.): 4.350 in.
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 2.50 in.
Product Attributes - Internal Construction: Perforated stainless tube with packing
Product Attributes - Outlet Diameter (in.): 2.50 in.
Product Attributes - Case Exterior Length (in.): 14.00 in.
Product Attributes - Manufacturer's Part Number: 400852

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor400852
SFX Item ID	4224639
Supplier Item Code	4224639
Manufacturer SKU	400852
Manufacturer UPC	808422008525
Alternative References	14in, 4.35in, 9in