Wheeley Bar Accessories
20 products
20 products
JMI accessories & upgrades
Everything that makes a JMI Wheeley Bar work harder for you — tie-down brackets, tow handles, wheel upgrades, replacement leveling screws, soft-ground feet, speed-dial drill adapters, battery pack holders, and even a full motor-drive kit. All built and supported by JMI (part of the CXB Astro family).
Pick up the accessories you missed at order time, replace a part as it wears, or upgrade your Wheeley Bar to handle a new observing site. Most accessories install in minutes with basic hand tools.
What's in This Collection
Tie-Down Brackets
Secure your scope and mount to the Wheeley Bar. Full kit for HD Medium/Large; Half Bracket for HD Shorty.
Wheel Upgrades
Step up from standard casters to 5″ polyurethane or 10″ all-terrain pneumatic tires.
Tow Handles
Pull your loaded Wheeley Bar without bending over. Standard tow handle plus the XL longer-handle upgrade.
Soft-Ground Feet
Sets of three larger feet that won't sink into grass, dirt, or gravel when you've parked and leveled the rig.
Speed-Dial Drill Adapters
Spin your leveling screws up and down with a cordless drill instead of by hand. Hours saved across a season.
Battery Pack Holders
Mount your power source directly on the Wheeley Bar frame. Standard size and XL.
Motor Upgrade
Drop-in motor-drive kit that powers your Wheeley Bar's wheels for serious imaging rigs and rough yards.
Replacement Leveling Screws
Lose one? Bend one? Replacements in both 1/2″ and 5/8″ sizes. Triangle-Style hardware upgrade for Dob owners.
Critical compatibility check: 1/2″ or 5/8″ leveling screws?
Many of these accessories — tow handles, soft-ground feet, speed-dial drill adapters, and replacement leveling screws — come in two versions based on which leveling screws your Wheeley Bar uses. Before ordering, check your existing Wheeley Bar:
1/2″ leveling screws
The older standard size. Common on Standard Medium Wheeley Bars and earlier Heavy-Duty models. The leveling screw threads measure 1/2″ across.
5/8″ leveling screws
The current heavy-duty standard. Common on newer HD Shorty, HD Medium, and HD Large Wheeley Bars. The thicker thread carries more load and runs smoother under the drill adapter.
Not sure which you have? Pull one leveling screw out and measure the thread diameter with calipers or a ruler. If you're still uncertain, email support@cxbastro.com with a photo — we'll confirm.
Frequently Asked Questions
How do I know if I need the 1/2″ or 5/8″ version of an accessory?
Pull one leveling screw out of your Wheeley Bar and measure the thread diameter. 1/2″ is the older standard (common on Standard Medium and earlier HD models). 5/8″ is the current heavy-duty standard (common on newer HD Shorty, Medium, and Large). If still unsure, email support@cxbastro.com with a photo and we'll confirm.
Can I add accessories to a Wheeley Bar I already own?
Yes — the whole accessory line is designed for retrofitting. Tie-down brackets bolt on with the existing hardware. Tow handles, soft-ground feet, drill adapters, and leveling screws all install in minutes with basic tools. The 5″ and 10″ wheel upgrades and the motor kit take longer but still drop in without modifications to the frame.
What's the difference between the standard tie-down bracket kit and the "Half Bracket" kit?
The Half Bracket kit is for the HD Shorty Wheeley Bar, which has a lower profile and only needs a half-height tie-down to secure the mount. The standard full kit is for the HD Medium and HD Large Wheeley Bars, which need the full bracket to clear the mount's height. Match the kit to your Wheeley Bar size.
Will the 10″ pneumatic wheel upgrade fit my existing Wheeley Bar?
The 10″ pneumatic wheel upgrade comes in two versions: one for Wheeley Bars with 1/2″ leveling screws, and one for 5/8″. Pick the version that matches your existing setup. Both versions raise the Wheeley Bar approximately 3.5 inches off the ground when assembled.
Do you sell parts for Dobsonian Wheeley Bars (Triangle Style)?
Yes. This collection includes a leveling-screw-and-hardware upgrade kit and a 5″ lockable caster wheel upgrade specifically for the JMI Triangle-Style Wheeley Bar for 8″/10″/12″ Dobsonian telescopes. If you need a part not listed, email support@cxbastro.com.
Don't have a Wheeley Bar yet?
Start with the right size for your scope. Full sizing guide and the heavy-duty vs standard breakdown.