Complete 53cc Pocket Bike Engine Kit
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Product details
Transform your Pocket Bike with the Complete 53cc Engine Kit by UD Racing
Discover the Complete 53cc Pocket Bike Engine Kit designed for riders who demand racing performance. This pocket bike motor kit fits air‑cooled pocket bikes, pocket cross bikes and pocket quads, delivering a significant power boost and rock‑solid reliability on the track. Every component is hand‑picked to provide a durable and responsive 53cc engine.

Technical components of the 53cc UD Racing engine kit
This pocket bike race engine features premium parts: two‑port racing piston, full‑weight racing crankshaft, heavy‑duty conrod bearings and a high‑quality spy seal. Supplied with UD‑Racing 53cc 4‑transfer kit, ignition, 15mm carburettor kit, 3‑shoe clutch and clutch bell with cover. Each part ensures reliable pocket bike motor performance.
Power gain and riding thrills
The key benefit of this pocket bike engine kit is a gain of over 2 hp, giving you quicker acceleration and a higher top speed. Designed for competition or private land use only – not street legal. Turn a standard pocket bike into a racing pocket bike with this complete kit.


Customisation: available in red and blue
Add a personal touch: this 53cc pocket bike engine kit comes in a choice of red or blue. Match your style while enjoying top‑level performance on the track.
Technical specifications
- Displacement: 53cc, 2‑stroke
- Two‑port racing piston
- Full‑weight racing crankshaft
- Heavy‑duty conrod bearings
- High‑quality spy seal
- UD‑Racing 53cc 4‑transfer kit
- Full ignition
- 15mm carburettor
- 3‑shoe clutch + clutch bell with cover
- Not street legal – for competition or private land only
Warning
General
- Brand XtremRS
- Reference UD-1579183132
Features
- Engine displacement 53cc
- Parts for vehicle Mini Moto Cross Thermique (Pocket Bike Thermique ) Mini quad thermique (pocket quad thermique)