SKU: 13318372830

Boom Racing Heavy Duty Keyed Bevel Helical Underdrive Gear 33/8T + Differential Locker Set for BRX70/BRX80/BRX90 PHAT & AR44/45/Capra Axles

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Description

Boom Racing Heavy Duty Keyed Bevel Helical Underdrive Gear 33/8T + Differential Locker Set for BRX70/BRX80/BRX90 PHAT & AR44/45/Capra AxlesPRODUCT INFORMATION: Introducing the strongest AR44 AR45 axle gears to date: Keyed Underdrive 33 8T HD Helical Bevel Gears + Differential Locker Set for AR44 AR45 housings #BR955042. The SCX10 II stock axle gears are known to be a weak point in the housing. After releasing the popular Keyed 27 8T Overdrive Hardened Steel Gears, requests were sent in for underdrive gears. So YOU asked, and we listened! Here is the new heavy duty underdrive 33 8T

PRODUCT INFORMATION:

  • Introducing the strongest AR44/AR45 axle gears to date: Keyed Underdrive 33/8T HD Helical Bevel Gears + Differential Locker Set for AR44/AR45 housings #BR955042.

    The SCX10 II stock axle gears are known to be a weak point in the housing. After releasing the popular Keyed 27/8T Overdrive Hardened Steel Gears, requests were sent in for underdrive gears. So YOU asked, and we listened!

    Here is the new heavy-duty underdrive 33/8T helical bevel gear & diff locker set.
    Designed for the AR44/AR45/Capra Currie F9 Axle Housing, Boom Racing AR44 PHAT Axle Housing or the BRX70/BRX80/BRX90 PHAT Axles.

    Use this gear to improve the performance of your crawler. Run them in the rear axle for a slower wheel speed in the rear tires. Underdrive gears help to steer in sharp turns like how a dig does and slower wheel speed in the back with higher torque output.

    Features:
    Underdrive gears create slower wheel speed for rear wheels to help steering with higher torque output
    Hardened steel gears for maximum strength and durability
    Keyed spool to increase structural strength and to eliminate the weakness of the M2 screws
    Tight tolerance of the diff locker and the axle shaft
    Tight tolerance of the bevel gear and input shaft to increase efficiency in the drivetrain

    Fits:
    Boom Racing BRX70 PHAT Axle
    Boom Racing BRX80 PHAT Axle
    Boom Racing BRX90 PHAT Axle
    Boom Racing PHAT AR44 Axle (BR955015)
    Axial AR44 Axle
    Axial AR45 Axle
    Axial Currie F9 Portal Axle

    Includes:
    1x Keyed Heavy Duty Bevel Gear 33T
    1x Heavy Duty Input Shaft 8T
    1x Keyed Differential Locker (Spool)
    3x M2 hardware
    4x 1mm washer

    This product will only fit one axle housing.

    Replacements are available:
    Diff Lock Spool

  • Package total weight: 36.00 grams (incl. packaging)
  • Factory description: Boom Racing Heavy Duty Keyed Bevel Helical Underdrive Gear 33/8T + Differential Locker Set for BRX70/BRX90/AR44 Axles
  • Manufactured by Boom Racing
  • Manufacturer number: BR955042
      Shipping Notes
      • Free Standard Shipping on $100+ Orders to the USA.
      • Except Preorder products are shipped in 48 hours.
      • Delivery to the USA:
      1. 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
      SKU: 13318372830

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      4.1 ★★★★★
      Based on 16 reviews
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      eddie r.
      Boise, US
      ★★★★★ 5
      Comfortable Jeans
      Size: 38, Color: Khaki
      Excellent pair of jeans. Super comfortable
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on April 17, 2026
      D
      Verified Purchase
      Denise
      Port Orchard, US
      ★★★★★ 4
      MOM-1, PANTS-1...well, I guess we both win
      Size: 32, Color: Black
      Purchased for my 17 yr old son, about 6'2, 180, medium built. PROS -Black pair is a nice happy medium between faded black and pitch dark. -Roomy around the waist, but not enough for children to sag (no, no, no,) -excellent price for quality of product CONS -might be too comfortable for wearer, resulting in an request for an abnormal amount of additional pairs -consistent compliments for wearer could cause inflated ego or confidence OVERALL I didn't hear any complaints from my son or "can you return this" which is a WIN for me, bc he's usually very picky. it's a whole thing with the length and the thickness, color, all of it. I thought these pants looked really nice, the color was casual enough for friends, and dressy enough for church. I was pleasantly surprised. Not a big fan of belts, but he is not comfortable with sagging (thank goodness), and the fit around the waist provided enough support to stay where they needed to. Pants also did not scrunch up at the bottom, and did not fit like capris. Product title described product to a T (or pants): slim fit stretch comfort casual classic solid- it was all of those in one!
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on December 2, 2025
      T
      Verified Purchase
      Timothy Ivery
      Lowell, US
      ★★★★★ 5
      Fits great
      Size: 36, Color: Brown
      Fit great 👍
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on May 24, 2026
      S
      Verified Purchase
      Sky
      Charlottesville, US
      ★★★★★ 3
      Super long length but quality fabric
      Size: 28, Color: Army Green
      Fits more like skinny jeans rather than slim fit. It’s a size 28 so my waist fits fine but the length is super long for no reason. I decided to keep it due to the fabric material feeling. I fold the bottom of the pants to make it look for fit. I’m 5’4.
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      Reviewed in the United States on March 11, 2026
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      Kyle Rackley
      Natrona Heights, US
      ★★★★★ 5
      Buying more pairs.
      Size: 36, Color: Purple
      True to fit and extremely comfy. Even tho the title says mens, it’s designed like a womens when it comes to the pockets. Not deep pockets. If you want a tight fit go a size smaller, if you want a baggy fit go size bigger. Color is how you see it in photos.
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      Reviewed in the United States on March 8, 2026

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