This is a complete set of rear assembled BRX70 portal PHAT™ axle set.
The BRX70 axle is Boom Racing's narrow axle. This is a heavy-duty and narrow axle set designed for performance-based scale RC builds. Designed for both linked and leaf spring setups. Use this axle as a base for any custom builds.
Packed with many desirable features; a heavy-weighted cast alloy axle housing for low CG, reversible axle bevel gear positions, leaf spring over and under axle (optional), detachable aluminum CNC truss, adjustable caster angle, and more.
It uses top-quality drivetrain components that are heavy-duty and efficient, including a set of hardened steel triangular keyed AR44 axle gears (30/8T) and a pair of BADASS™ steel rear drive shafts for ultimate strength and durability.
The portal gearbox is designed with four heavy-duty hardened steel gears each for strength and durability.
Includes black color XT diff cover and black color third member unit (fits Reverse AR44 Helical Cut Bevel Gear for running Counter Rotating Center Drive Shafts usually used in the rear axle).
Specification:
Width: 160.4mm / 6.31" pin-to-pin (BRX70 portal axle front and rear axles are the same width)
Requires 44mm / 1.73" wheel barrel clearance (to clear the entire portal gearbox)
Portal gearbox ratio: 1:1
Weight: 250g
Portal Gearbox Size:
Width: 23.5mm
Height: 30.5mm (21.5mm above shaft / 9mm below)
Features:
Additional 15mm / 0.59" ground clearance at the pumpkin over BRX70 straight axle
CNC aluminum portal knuckle & cover
BADASS™ heavy-duty steel front universal driveshafts and portal driveshafts for ultimate durability and strength for the axle drivetrain
Four heavy-duty hardened steel metal gears in each portal gearbox
Narrow axle setup for super scale builds and smaller 1/10 bodies
Cast PHAT™ axle housing - strong, durable, and heavy which keeps the CG low
Anti-twist steel brackets (0 deg) for added axle strength (optional 10 deg +ve caster available)
Reversible ring gear position in the housing and optional reversed AR44 gear for counter rotation center drivetrain setup
Triangular keyed AR44 (30/8T) high pinion gear & input shaft (optional overdrive and underdrive gears available)
Chassis Mounted Servo (CMS) and Axle Mounted Servo (AMS) setup option
CNC aluminum truss included for 3-Link and 4-Link setup
Detachable knuckle lever for Behind-The-Axle steering setup
Leaf spring over and under the axle housing
Compatible with PHAT™ Axle brake disc and caliper (requires optional adapter #BRPT005)
Adjustable caster angle for additional steering adjustability
High steering angle - over 45 degrees
Removable third member for 6x6 / 8x8 pass-thru option
Third member high pinion angle for better clearance
Counter rotation stainless steel steering link for quick adjustments
Full rubber sealed bearings
Full 12.9-grade hardware
Includes:
2x CNC Aluminum Portal Lockout #BRPT7023B
2x CNC Aluminum Portal Cover #BRPT003
2x BADASS Portal Rear Driveshaft #BRPT7023A
2x BADASS Portal Shaft Spindle #BRPT007
4x Hardened Steel Gear 20T
4x Hardened Steel Gear 16T
2x Anti-Twist (0 Deg) Steel Bracket (Left & Right) #BRPT004
1x Cast Alloy PHAT Axle Housing #BRLC7024
1x Cast Alloy XT Pumpkin Diff Cover #BRLC7088
1x AR44 30/8T Triangular Keyed Hardened Steel Gear Set (Ring/Pinion Gear + Spool) #BR955020
1x CNC Aluminum Truss #BRLC7004
2x CNC Aluminum Link Mount #BRLC7005
1x M3 Nyloc #BRASNUTM3
22x Full Rubber Ball Bearings
4x Washer
5x Spacer D5X8X0.1 #BRASSPD5801
2x E-Clip #BRASEC30
Full 12.9 Grade Screws
When you receive the axle:
Make sure to grease up the axle set. You can fill up the empty space with diff grease surrounding the bevel gear and input shaft.
The gear positions are factory setup and should be ready to go. Rotate the drivetrain by hand for physical inspection.
Install spacers accordingly between the center driveshaft and the input shaft to prevent input shaft from unnecessary Slop.
