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Borla CrateMuffler S-Type Big Block Chevrolet Stock Output 396/402/427 V8.

SKU: BOR400854

Mufflers

BOR CrateMufflers...

Borla CrateMuffler S-Type Big Block Chevrolet Stock Output 396/402/427 V8.

SKU: BOR400854

Mufflers

BOR CrateMufflers...

A$633.08
Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.

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Description

CrateMuffler

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 aggresssive ATAK(r) sound and will dramatically reduce, or eliminate drone on specified applications. Muffler dimensions 2.5" Offset Inlet/ 2.5" Offset Outlet, .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.

Additional Information

CrateMuffler, Chevrolet Big Block 396/ 402/ 427 CID V8 Stock Output, 2.5" Offset Inlet/ 2.5" Offset Outlet, 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length, ATAK.

Part Type

Exhaust Muffler

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.


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 17:22:33

Data: v4.2 - Upd: 2026-11-09 01:07:17

Features

  • 2.5" Offset Inlet/ 2.5" Offset 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

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

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/Offset; 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:Offset
Outlet Size (in.):2.5
Outlet Type:OEM
Overall Length (in.):OEM
Overall Length:OEM
Part Number:bor400854
Shape:Oval
Title Extended:CrateMuffler(r) Muffler Chevrolet Big Block 396/ 402/ 427 CID V8 Stock Output 2.5 in. Offset Inlet/ 2.5 in. Offset Outlet ATAK(r) Part # 400854
Title:CrateMuffler(r) Muffler Chevrolet Big Block 396/ 402/ 427 CID V8 Stock Output 2.5 in. Offset Inlet/ 2.5 in. Offset Outlet ATAK(r)

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Borla, Borla Exhaust
StreetFX SKU bor400854
SFX Item ID 4225486
Accounting SKU bor-400854
Manufacturer SKU 400854
Manufacturer UPC 808422008549
Alternative References 400854, BOR-400854

Muffler, ATAK CrateMuffler, Oval, Stainless Steel, Natural, 2.50 in. Offset Inlet/Outlet, Chevy, Each

Borla ATAK CrateMufflers will optimize the sound and performance of your crate and custom-built motors. Get the loud, deep growl you crave from an aircraft-grade T-304 stainless steel exhaust. ATAK (acoustically tuned applied kinetics) technology produces the highest dB levels, avoiding distortion to retain clarity—and the mufflers are custom-tuned for your specific vehicle. Let Borla help you achieve the perfect exhaust note for your custom build. Order the CrateMuffler size and configuration for your vehicle application.

Product Attributes
BrandBorla
Manufacturer's Part Number400854
Part TypeMufflers
Product LineBorla ATAK CrateMufflers
UPC808422008549
Muffler Material304 stainless steel
Inlet Diameter (in.)2.50 in.
Outlet Diameter (in.)2.50 in.
Inlet Quantity1
Outlet Quantity1
Internal ConstructionPerforated stainless tube with packing
Inlet LocationOffset
Outlet LocationOffset
Case ShapeOval
ReversibleNo
Muffler FinishNatural
Case Exterior Length (in.)14.00 in.
Thickness (in.)4.350
Width (in.)9.000 in.
Outlet StyleStandard, without tip
RemanufacturedNo
QuantitySold individually.
NotesATAK style muffler.

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