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BGM ORIGINAL Item number: BGM7920
BGM ORIGINAL

Swingarm bearing set -BGM ORIGINAL- Vespa PX Lusso (1984-, V8X1T, VLX1T, VNX1T, VNX2T, VSX1T, ZAPM09, ZAPM18, ZAPM50, ZAPM51, ZAPM74), T5 125 (VNX5T), Cosa 125-200 (VSR1T, VNR1T, VNR2T), PK 50 (V5X1T), PK 50 XL2 automatic (VA52T

5 Ratings
Steering impulses are transmitted directly and without play to the front wheel
Needle roller bearing with 16 mm bearing pin, outer Ø 22 mm
Bearing bolt length 56 mm - factory specification
Including O-rings, V-rings and safety cramps
Mounting: Press recommended; components relevant to steering
20,90 €*
available immediately
Shipping weight 0,13 kg
Information on product safety
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BGM swingarm bearing set - Vespa single-sided swingarm from approx. 1984

Complete set for overhauling the bearing between the steering tube and front swingarm on Vespa/Piaggio models with single-sided swingarm (late generation from ~1984). Precise guidance, clean steering feel and reliable sealing - ideal for everyday use, restoration or TÜV preparation.

Single-sided swingarm from ~1984 Complete set Needle bearing O-/V-rings incl. TÜV-relevant assembly

Advantages & safety

Precise wheel guidance during braking, potholes and sloping positions
Tight system: O-/V-rings protect the needle bearings from water/dirt
Direct, play-free steering feel - prevents handlebar flutter
Reliable fixation via pressed-in safety cramps

Technical data & mounting instructions

Bearing bolt: Ø 16 mm - length 56 mm
Outer needle bearing: Ø 22 mm (running in aluminum rocker arm)
Sealing: O-rings & V-rings included in the set
Installation: Generally remove steering tube; set bearings and cramps with parallel press
Lubrication: use high-quality roller bearing grease; lightly grease sealing lips

Compatible models (single-sided swingarm, late version)

PX Arcobaleno/Lusso, MY, Disc, 2011 (from approx. 1984)
T5 125 (VNX5T)
Cosa 125/150/200
Other Piaggio/Vespa models with single-sided swingarm of the same specification

Note: Please compare dimensions/part numbers with the existing fork/swingarm position. Deviations possible depending on year of manufacture/market.

Maintenance & typical symptoms

Symptoms of worn bearings: play in the front wheel, cracking/shuddering, imprecise turning, brake fluttering
Brittle seals allow water to penetrate → Needle bearing damage: Carry out revision promptly
After assembly: Check steering head bearing preload, test ride, retighten screw connections

FAQ - Frequently asked questions about the swingarm bearing set

Noticeable play in the swingarm mount, rumbling noises, unsteady steering or brake flutter. Visual inspection: damaged sealing lips/o-rings, corrosion at the bearing points.
Recommended yes. Alternatively, use suitable insertion/extraction tools. Important: Set bearings parallel, do not tilt, do not damage seals.
Fill the needle roller bearing with high-quality roller bearing grease, lightly grease the O-/V-rings. Insert the bearing flush/parallel, apply the locking cramps completely. Check the steering tube for free movement.
It is designed for the late single-sided swingarm generation (from ~1984). Please compare the specified dimensions (bolt Ø 16 mm, length 56 mm, bearing outer Ø 22 mm) with the existing fork/swingarm position.
This is how we ensure, that reviews come from real consumers.
Anonym  01/04/2021

Good quality but one problem
everything good except the retaining clips are made from mild steel. They should be spring steel.

Lasse H. from Syke 05/21/2025
Marc B. from Hamburg 05/27/2025
Ludwig M. from Warngau 10/09/2025
Wolfgang T. from St. Margarethen an der Raab 10/28/2025
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OEM numbers (for comparison purposes only)
Piaggio:
137146, 177451, 198513, 1C001985
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