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Hop-up Parts for Traxxas 1/10 TRX-4 Scale and Trail Crawler

Shop aftermarket parts for Traxxas TRX-4 1/10 scale crawlers, including drive shafts, steering hardware, suspension components and setup tools. Check the vehicle version and each product’s stated fitment. For interiors, lighting and scale details, explore our TRX-4 accessories selection.

49 total products 1 filter active

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Compatible models
1/10 Bandit 2WD 1/10 Bigfoot M/T 1/10 Drag Slash T-Maxx 3.3 #4907/#4908 / E-Maxx #3903/#3905/#3908 1/10 E-Revo (-2017) / Revo / Slayer 1/10 E-REVO 2.0 (2018+) 1/10 Hoss 4x4 1/10 Jato 2.5 / 3.3 Buggy 1/16 Mini Slash 4X4 1/10 Monster Jam 1/10 Nitro Rustler 1/10 Nitro Slash 2WD 1/10 Rustler 2WD 1/10 Rustler 4x4 (-2023) 1/10 Rustler 4x4 BL-2s 1/10 Slash 2WD (-2021) 1/10 Slash 2WD (2022+) 1/10 Slash 4X4 (-2023) 1/10 Slash 4X4 BL-2s 1/10 Slash 4X4 LCG (-'23) 1/10 ST Rally (-2023) 1/10 ST Rally BL-2s 1/10 Stampede 2WD (-2025) 1/10 Stampede 4X4 (-'23) 1/10 Stampede 4X4 BL-2s 1/10 Summit 1/10 Telluride 4x4 1/10 TRX-4 Crawler 1/10 TRX-6 Crawler 1/16 E-Revo / Slash / Summit / Rally 1/16 Mini Maxx 1/16 Mini XRT 1/18 LaTrax Rally 1/18 LaTrax SST 1/18 LaTrax Teton 1/18 TRX-4M Crawler 1/5 Pro Scale Sand Car 1/5 X-Maxx 4X4 1/5 X-Maxx w/WideMaxx 1/10 Maxx 4S / Maxx V2 WideMaxx 1/6 XRT 8S 1/7 Unlt. Desert Racer 1/8 Jato 4X4 Buggy 1/8 Maxx Slash 6S 1/8 Sledge 4WD
Part type / Color
Servo Horn
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Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=20, 24mm) Save 47%

Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=20, 24mm)

In stock
C30327RED
$3.17 USD $5.99
Save 47%
Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28428BLACK
$11.99 USD
Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler Sold out

Red Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Crawler | TRX-...

Sold out
C32192RED
$7.99 USD
Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler

Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler | TR...

In stock
C32192LIGHTBLUE
$7.99 USD
Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler Save 16%

Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler | TR...

In stock
C32192GUN
$6.71 USD $7.99
Save 16%
Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler

Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler | TR...

In stock
C32192BLUE
$7.99 USD
Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler Sold out

Alloy Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler | TR...

Sold out
C32192BLACK
$7.99 USD
Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=20, 24mm) Save 47%

Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=20, 24mm)

In stock
C30327GOLD
$3.17 USD $5.99
Save 47%
Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=20, 24mm) Save 23%

Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=20, 24mm)

In stock
C30327BLACK
$4.61 USD $5.99
Save 23%
Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm) Save 64%

Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

In stock
C30326RED
$2.52 USD $6.99
Save 64%
Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm) Save 38%

Billet Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

In stock
C30326BLACK
$4.33 USD $6.99
Save 38%
Alloy Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm) Save 55%

Alloy Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

In stock
C30160RED
$1.80 USD $3.99
Save 55%
Alloy Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

Alloy Machined Steering Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

In stock
C30160GOLD
$3.99 USD
Billet Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler Save 18%

Billet Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler

In stock
C30128RED
$10.65 USD $12.99
Save 18%
Billet Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler Save 28%

Billet Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler

In stock
C30128GUN
$9.35 USD $12.99
Save 28%
Billet Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler Save 5%

Billet Machined Shifting Servo Horn Set for Traxxas 1/10 TRX-4 Scale Crawler

In stock
C30128BLACK
$12.34 USD $12.99
Save 5%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm) Save 31%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm)

In stock
C28570SILVER
$6.89 USD $9.99
Save 31%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm) Save 16%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm)

In stock
C28570RED
$8.39 USD $9.99
Save 16%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm) Save 52%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm)

In stock
C28570GREY
$4.80 USD $9.99
Save 52%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm) Save 66%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm)

In stock
C28570GREEN
$3.40 USD $9.99
Save 66%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm) Save 5%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm)

In stock
C28570BLUE
$9.49 USD $9.99
Save 5%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm) Save 46%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=9mm)

In stock
C28570BLACK
$5.39 USD $9.99
Save 46%
Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 16%

Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28428SILVER
$10.07 USD $11.99
Save 16%
Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 37%

Red Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28428RED
$7.55 USD $11.99
Save 37%
Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 16%

Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28428GREY
$10.07 USD $11.99
Save 16%
Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

Billet Machined Alloy Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28428GREEN
$11.99 USD
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm) Save 73%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm)

In stock
C28402SILVER
$3.24 USD $11.99
Save 73%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm) Save 73%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm)

In stock
C28402RED
$3.24 USD $11.99
Save 73%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm) Save 73%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm)

In stock
C28402GUN
$3.24 USD $11.99
Save 73%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm) Save 11%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm)

In stock
C28402BLUE
$10.67 USD $11.99
Save 11%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm) Save 10%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=20-25mm)

In stock
C28402BLACK
$10.79 USD $11.99
Save 10%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm) Save 51%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm)

In stock
C28401SILVER
$5.88 USD $11.99
Save 51%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm) Save 22%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm)

In stock
C28401RED
$9.35 USD $11.99
Save 22%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm) Save 52%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm)

In stock
C28401GUN
$5.76 USD $11.99
Save 52%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm) Save 37%

Blue Alloy Adjustable Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm)

In stock
C28401BLUE
$7.55 USD $11.99
Save 37%
Alloy Adjustable Length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm) Save 10%

Alloy Adjustable length Steering Servo Horn 25T for Traxxas TRX-4 (r=16-21mm)

In stock
C28401BLACK
$10.79 USD $11.99
Save 10%
Alloy Machined Fixed Length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 73%

Alloy Machined Fixed length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28400SILVER
$3.24 USD $11.99
Save 73%
Alloy Machined Fixed Length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 73%

Alloy Machined Fixed length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28400RED
$3.24 USD $11.99
Save 73%
Alloy Machined Fixed Length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 71%

Alloy Machined Fixed length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28400GUN
$3.48 USD $11.99
Save 71%
Alloy Machined Fixed Length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 73%

Alloy Machined Fixed length Steering Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28400BLUE
$3.24 USD $11.99
Save 73%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 73%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28139SILVER
$2.43 USD $8.99
Save 73%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 16%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28139RED
$7.55 USD $8.99
Save 16%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm) Save 73%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28139BLUE
$2.43 USD $8.99
Save 73%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm)

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=22mm)

In stock
C28139BLACK
$8.99 USD
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm) Save 50%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

In stock
C28138SILVER
$4.50 USD $8.99
Save 50%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm) Save 16%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

In stock
C28138GUN
$7.55 USD $8.99
Save 16%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm) Sold out

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22mm)

Sold out
C28138BLUE
$8.99 USD
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22.5mm) Sold out

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22.5mm)

Sold out
C28137SILVER
$8.54 USD $8.99
Save 5%
Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22.5mm) Save 23%

Billet Machined Alloy Servo Horn 25T for Traxxas TRX-4 (r=18, 22.5mm)

In stock
C28137GUN
$6.92 USD $8.99
Save 23%