BT300 — BT300 three-bike spare-tire rack
Black powder-coated steel rack with a spare-wheel backing plate and lockable top carrier.
View BT300 productSurco BT300 Spare-Tire Bike Rack: Parts and Mounting Guide
If your vehicle carries a full-size spare wheel at the rear, the Surco BT300 supports up to three bicycles from a bracket secured at the spare-wheel mounting location. Unlike a ladder-mounted carrier, the BT300 relies on the spare wheel mounting hardware and the rear door or carrier structure. Check the vehicle's permitted loading and access before installation.
Identify the BT300 assembly parts
Surco's original installation sheet names three primary items in the rack assembly. These are identification names from the maker's parts list, not separate replacement SKUs.
| Factory parts-list item | Part name | Role in the assembled rack |
|---|---|---|
| 1 | Bike rack | Vertical carrier and padded bike-support channel; accepts the removable locking top plate |
| 2 | Backing plate | Fits over the spare-wheel mounting studs behind the wheel and exposes the support to engage the rack |
| 3 | Security bolt | Tightens the rack to its backing plate after it is positioned |
Vehicle spare-wheel studs
The vehicle's original spare-wheel mounting location; not a part supplied with the rack.
Backing plate (part 2)
Placed over the spare-wheel mounting studs, behind the refitted wheel.
Rack (part 1)
Slides over the exposed support of the backing plate.
Security bolt (part 3)
Secures the rack to the backing plate after installation.
Component order is based on Surco's installation instructions. This is a conceptual identification layout, not a scaled drawing or a substitute for the vehicle's wheel-mounting procedure.
How the bicycles are held
The BT300 has a padded channel for the bicycle frames and a removable top plate that secures the bicycles in place. The rack is made from steel with a black powder-coated finish. Surco identifies a maximum of three bicycles; that is a count, not a statement that every combination of three bicycle weights is approved.
See the exact BT300 rack
Important fit and safety checks
- Confirm the vehicle uses an appropriate accessible exterior spare-wheel mount, with sufficient space for the rack and bicycles.
- Check the owner's manual for rear-door, rear carrier, spare-wheel and added-accessory weight limits. Do not exceed the lowest applicable limit.
- Follow Surco's specified sequence for placing the backing plate and refitting the spare wheel. Wheel fasteners require the vehicle maker's correct tightening procedure.
- Secure the rack with its security bolt and follow Surco's padlock requirement to prevent the bolt from backing out during travel.
- Inspect bicycle frame contact, balance, visibility of lights/plate, rear-door swing and overall vehicle clearance before driving.
Manufacturer product and installation references
See Surco's BT300 product and photographs and the original Surco BT300 instruction sheet (PDF) for the factory assembly sequence and safety warning.
If your RV uses a fixed rear ladder instead of a rear-mounted spare wheel, see the Surco 501BR ladder-mounted bike carrier reference. The attachment systems are different.
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