GPM Racing Aluminium 7075 Rear Caliper for Losi Promoto-MX Motorcycle RTR FXR (MX036)
We are the importer of record — the price you see is the price you pay.
Handled by us in the UK under the Consumer Rights Act — no sending it overseas.
What our customers say
A selection of recent five-star reviews, as written.
-
★★★★★
Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.
Robert, 22 September 2026
-
★★★★★
Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.
Anna Abbott, 17 September 2026
-
★★★★★
Excellent service speedy delivery and good customer service
GLYN, 10 September 2026
-
★★★★★
Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.
Paul Jordan, 3 September 2026
-
★★★★★
Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!
Oliver Galustian, 23 July 2026
-
★★★★★
Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.
Simon, 19 July 2026
-
★★★★★
Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍
Mark Clucas, 30 January 2026
-
★★★★★
The customer service and advice were first class!
Steve Avery, 9 September 2025
-
★★★★★
The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.
Pete Goddard, 15 April 2025
-
★★★★★
Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.
Graham Rousseau, 10 February 2025
Key Specs
- Weight
- 6 g
About this product
Precision CNC Rear Caliper for PROMOTO-MX
MX036 is a machined 7075 aluminium rear caliper developed as a durable replacement for PROMOTO-MX 1/4 machines. The component improves mounting stiffness relative to stock polymer parts, reducing flex at the caliper mounting interface and helping to stabilise pad orientation during braking cycles.
Engineered for straightforward serviceability, the caliper retains the original brake linkage geometry and bolt pattern, allowing easy swap-in without changes to brake actuation principles. The design focuses on reliable alignment and repeatable setup for demanding hobby use.
Installation should be done on a bench with standard RC tools, with attention to rotor clearance, pad seating and correct fastener torque. Verify alignment and runout after initial runs and include the caliper in routine maintenance inspections to preserve fitment and wear characteristics.
Packing includes
- Rear caliper – 1pc
Original Name / Part No:
LOS264000
Compatible Models
- LOSI-1/4 PROMOTO-MX MOTORCYCLE RTR, FXR-LOS06000
- LOSI-1/4 PROMOTO-MX MOTORCYCLE RTR PRO CIRCUIT-LOS06002
What tolerances should I expect from MX036?
Fabricated from CNC-machined 7075, MX036 is produced to tighter dimensional tolerances than injection-moulded parts; expect improved repeatability in mounting and pad position across units.
Are replacement pads available for this caliper?
Pad availability follows standard PROMOTO-MX shapes; confirm backing plate dimensions and thickness when sourcing pads to ensure correct fit and clearance.
What inspection points should be included in a service check?
Inspect mounting face flatness, fastener torque, pad wear, and rotor runout. Replace or dress components showing scoring or uneven wear to maintain braking consistency. Write Product Review Please sign in your account before you can write any review.
Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.
What our customers say
A selection of recent five-star reviews, as written.
-
★★★★★
Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.
Robert, 22 September 2026
-
★★★★★
Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.
Anna Abbott, 17 September 2026
-
★★★★★
Excellent service speedy delivery and good customer service
GLYN, 10 September 2026
-
★★★★★
Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.
Paul Jordan, 3 September 2026
-
★★★★★
Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!
Oliver Galustian, 23 July 2026
-
★★★★★
Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.
Simon, 19 July 2026
-
★★★★★
Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍
Mark Clucas, 30 January 2026
-
★★★★★
The customer service and advice were first class!
Steve Avery, 9 September 2025
-
★★★★★
The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.
Pete Goddard, 15 April 2025
-
★★★★★
Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.
Graham Rousseau, 10 February 2025
