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SKU:
NLT1M00084
Ships for free in 2–4 business days.
Thumb Throttle Assembly for Honda TRX ATV 7/8-Inch Handlebars
$49.99
In Stock
$49.99
Sale price
$49.99
Regular price
This aftermarket thumb throttle assembly fits compatible Honda TRX ATV applications using a 7/8-inch handlebar and a matching mechanical throttle cable.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Honda TRX250R
- Honda TRX250X
- Honda TRX300 and TRX300EX
- Honda TRX350 FourTrax
- Honda TRX400EX and TRX400X
- Honda TRX420 Rancher
- Honda TRX450R
- Honda TRX700
- Honda Foreman, Rancher, Rubicon, and Recon models with matching cable control
Product Overview
A cracked housing, worn lever pivot, or sticking cable seat can make throttle control vague or unsafe. This assembly replaces the handlebar control that converts thumb movement into cable travel on compatible Honda ATVs. It is suited to mechanical-cable systems and should not be installed on electronic throttle controls or sensor-equipped housings unless every connection matches.
The result is a focused repair path for the owner who has already narrowed the problem to this component. Match the handlebar diameter, cable end, lever travel, housing shape, stop-switch/sensor provisions, and original part layout.
Key Features & Performance
- Mechanical thumb-operated throttle control
- Fits standard 7/8-inch handlebars when configuration matches
- Replacement housing and lever assembly
- Useful for worn pivots, cracked housings, or damaged cable seats
Replaces Part Numbers
- 53142-HC0-770
Common Uses
- Thumb lever does not return smoothly
- Throttle housing is cracked after a rollover
- Cable no longer seats securely in the control
- Restoring predictable control on a trail or utility ATV
Technical Specifications
- Product Type: Thumb Throttle Assembly
- Handlebar Size: 7/8 Inch (22 mm)
- Control Type: Mechanical Cable
- Application: Honda ATV
- Replacement Type: Aftermarket
Installation & Fitment
- Inspect and lubricate or replace the throttle cable as required
- Set cable free play to the vehicle specification
- Turn handlebars fully left and right while checking idle speed
- Verify the lever snaps closed without assistance
- Do not operate the ATV if the throttle binds or returns slowly
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Match the handlebar diameter, cable end, lever travel, housing shape, stop-switch/sensor provisions, and original part layout.
Frequently Asked Questions
Q: Will this fit an electronic throttle system? A: No fit is claimed for electronic throttle or sensor-integrated controls unless the original assembly matches exactly.
Q: Can a bad cable cause the same sticking symptom? A: Yes. Inspect the cable routing, liner, carburetor or throttle-body linkage, and return spring.
Q: Is the 7/8-inch dimension enough to confirm fit? A: No. Cable end, travel, housing features, and model configuration must also match.
Part Summary
keywords: Honda TRX thumb throttle replacement, 7/8 ATV throttle assembly, TRX400EX throttle lever housing, TRX420 mechanical throttle control, Honda ATV sticking thumb throttle
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.