Pay in installments of $31.25 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Boom Racing Complete Rear Assembled BRX70 Portal PHAT™ AxlePRODUCT RESOURCES Instruction Manual Complete Front Assembled Portal Axle For BRX70 & BRX90 BRPT7023_BRPT9023_20231021_1697858919. Pdf 7. 51 MB TAGGED CATEGORIES: AXLE & ACCESSORIES PRODUCT INFORMATION: 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.
PRODUCT RESOURCES
TAGGED CATEGORIES:
-
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.
Optional Parts:
- Anti-Twist (10 Deg Positive Caster) Steel Bracket (Left & Right) #BRPT004+10
- Rear Skid Plate for BRX70/BRX80/BRX90 PHAT™ Axle #BRLC7086R
- Classic Diff Cover for BRX70/BRX80/BRX90 PHAT™ Axle Black #BRLC7026
- Steel Leaf Spring Channel w/ Shock Mount for BRX70/BRX80/BRX90 PHAT™ Axle (2) #BRLC7010
- Color: Black
- Package total weight: 309.50 grams (incl. packaging)
- Package size: 9.00 x 24.00 x 8.00cm
- Factory description: Boom Racing Complete Rear Assembled Portal Axle for BRX70
- Manufactured by Boom Racing
- Manufacturer number: BRPT7023
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 16 reviews
Sort
Product Reviews
★★★★★ 5
Our Yorkie Puppy Loves This Toy!!!
Color: Red
Warning: your pet may become completely obsessed
I’ve had this toy for about a year for my Yorkshire Terrier, Gia, and it’s easily the most successful toy purchase I’ve ever made. We even had to replace the first one after she loved it a little too much (chewed the string off), and have since bought more as gifts for friends’ pets. Great toy for small dogs (too fragile for bigger dogs) and active, young cats.)
What we love:
* Endless engagement: Gia ignores all her other toys and goes straight for this every time
* Interactive features: Subtle beeping + changing colored lights + unpredictable rolling patterns keep her hooked
* Energy burner: Perfect for indoor play on hardwood floors—she will chase it nonstop
* Rechargeable: Battery lasts several hours, even with frequent use
* Durability: Holds up well considering how rough she plays
Real-life note:
Gia will literally bring this toy to me to get me involved—and I have to limit her playtime because she won’t stop on her own.
Bottom line:
If you have a high-energy dog (or even a playful cat), this isn’t just a toy—it becomes their favorite activity… and possibly their entire personality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
This is a great ball for high energy dogs.
Color: Blue
I have a Belgian Malinois, so you can imagine the Maligator jaws. Just opened this today and let her play with it indoors. She LOVES IT. It wore her out and it’s a toy she can really stay focused on without needing me to throw or roll for her. It moves on its own! I supervised her play. I was hoping it was too big to get under the couch, but no. It goes right under it. I had to block off the gap so I didn’t have to keep getting it out from under for her. The outter “shell” is very durable! When she had resting moments, she chewed it pretty good - I could hear the material squeaking against her teeth. I was worried she was tearing it up, but nope! Not a mark on it. It’s easy to set up and operate. It needed charging before play. After hours of play, she was able to somehow unscrew the outter shell. This concerned me bc the smaller, inner ball mechanism came out but I saw it right away and was able to put it back together. So, make sure it’s screwed together tightly (which I thought I had done without breaking it) and check it from time to time to make sure it hasn’t loosened. This is a great ball for her incredible high energy drive. It gives her the work and fun play she needs to get tired, which I love. This toy is on the expensive end, but so far it’s worth it. Now we’ll see how long it lasts!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
★★★★★ 5
Love love it
Color: Blue
Best dog toy ever. I have a 1 year old boxer who is full of energy (understatement). This ball has provided more entertainment for us both than any dog toy I’ve ever purchased. Charge holds well and has a very resilient shell. I love it. Worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 4
Great ball for limited entertainment. Replaceable outer shell is an amazing option!
Color: Blue, Color: Blue
Bought this for our 45lb, ball-obsessed Dutch shepherd/pit bull dog mix. I had one of these years ago with the hard shell and couldn’t be happier with the new foam shell.
The new foam shell is much quieter and while our dog might put holes in it with his teeth, he doesn’t seem to ever pull pieces off.
For engagement level, he found it VERY interesting at first and was scared to grab it, but once he got over that he started holding it in his mouth even when it shakes and just tries to keep it.
Isn’t the best for fetch or anything as he has trouble letting it go when it is actively moving, but it makes him happy while he has it. We just make sure to monitor him while it is out.
The ability to change the outer shell and just buy a replacement for the shell instead of a whole new toy is a lovely feature that makes me very happy to continue buying from this company.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
★★★★★ 5
Great Interactive Option
Color: Blue
To start, I have been very happy with this purchase. A couple of key points for me are durability and being able to keep my dog's attention. I have had it for almost a year, just a month shy, and she hasn't managed to get through the foam outer shell even though she tries real hard to do so. Let's just say, she's hard to find toys for because of her habit of finding the point of failure where she can pick and gnaw at until the toy is no longer safe for her to have. With this toy, she not only found her match, but it also has her watching, waiting, and even stalking. Only one small issue has recently occurred: the motor has started having an issue where the charge doesn't hold, and it doesn't remain on afterwards. I have reached out to Cheerble directly to see about replacing it since I am still within their 12-month timeframe, and they responded right away.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026