Naraku Heavy Duty Wrist Pin Bearing 12x17x13mm
Naraku Heavy Duty Wrist Pin Bearing 12x17x13mm
$20.04
4 in stock
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Product Details
Description
Naraku Heavy Duty 12mm Wrist Pin Bearing: 50cc 2T
Key Details
- NK101.70
Specifications
- Length: 13mm Universal Fit
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 50cc, 2-Stroke
- Fitment Notes: Universal Fit
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Is this for 50cc scooters?
A: This SKU is listed with 50cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 0.3 lbs |
|---|---|
| Dimensions | 4 × 4 × 2 in |
High-RPM Reliability: Naraku Heavy Duty Small End Bearing
Ensure the heart of your engine remains stable with the Naraku Heavy Duty Wrist Pin Bearing. Engineered for 50cc 2-stroke engines, this "small end" needle bearing features a reinforced silver-plated cage designed to withstand the extreme thermal stress and high rotational speeds of performance tuning. Whether you are performing a routine top-end refresh or installing a high-compression cylinder kit, this bearing provides the precision fit and reduced friction necessary to prevent catastrophic engine failure.
Technical Performance Features
- Heavy Duty Silver Cage: Specifically designed for superior heat dissipation and reduced friction compared to standard steel-caged bearings.
- Precision Needle Rollers: Features high-grade hardened steel rollers for maximum load-bearing capacity and smooth piston articulation.
- Optimized for Performance: The ideal choice for "Sport" and "Mid-Race" 70cc kits where crankshaft RPM exceeds factory limits.
- OEM-Spec Dimensions: A direct 12x17x13mm replacement for a wide range of European and Japanese 2-stroke scooters.
Comprehensive Fitment Guide
This bearing fits a massive variety of 50cc 2-Stroke models using a 12mm wrist pin:
| Brand | Compatible Models |
|---|---|
| Vespa / Piaggio | ET2, LX/LXV, Primavera, Sprint 50, Fly 50, Typhoon 50 |
| Honda | Dio, Elite 50 (1994+ / AF27/AF28/AF34/AF35) |
| Aprilia | SR 50, Mojito, Scarabeo, Sport City One 50 |
| Kymco / SYM | Super 9, Agility, Like 50, DD 50, Fiddle I, Jet 50 |
| Vintage Vespa | PK 50, V 50 |
Technical Specifications
- Inner Diameter: 12mm
- Outer Diameter: 17mm
- Length: 13mm
- Cage Type: Silver-Plated Heavy Duty
Mechanic's Note: The wrist pin bearing is the most stressed bearing in a 2-stroke engine.
Safety Warning: Never reuse an old wrist pin bearing during a top-end rebuild.
Pro Tip: When installing, liberally coat the bearing in high-quality 2-Stroke Racing Oil to ensure immediate lubrication upon the first start-up. Check your Piston Circlips for tension while you're in there!
SKU: 137-73
Vendor: Naraku
