Crankshaft -BGM Pro RACING (for reed valve intake) full circle web, 54mm stroke, 105mm conrod- Vespa PK125 XL2, PK125 ETS (Ø=24mm cone)

Preview: Crankshaft -BGM Pro RACING (for reed valve intake) full circle web, 54mm stroke, 105mm conrod- Vespa PK125 XL2, PK125 ETS (Ø=24mm cone)

Description

The bgm PRO Racing Shaft with 54 mm stroke is the maximum for racing or ambitious road tuning.
The cheek diameter has been enlarged in contrast to a normal shaft to achieve the necessary higher overlap at the crankpin despite the increased stroke and thus additional torsional resistance to

. This minimises the risk of twisted cheeks and welding with the usual disadvantages is not necessary.

With virgin housings, the housing must therefore be spindled to 88 mm

A huge advantage is the high quality 105 mm long connecting rod, with cleanly executed lubrication holes and now 5 mm thick. This is eight millimetres longer than the standard connecting rod of the 125 series. The advantages of the longer connecting rod are a more favourable deflection angle and the resulting lower friction of the piston in the raceway.

This increases the performance and results in a lower pre-compression, which works great especially with the new reso systems such as the fire magic of the company Ludwig und Scherer. M7 studs (BGM 0290) must be used. All this is included in the kit (7673184).

The shaft is operated with the standard bearing of the ETS.

- Non-rotating,Stable cheeks

- High-quality 105mm long connecting rod with 5mm thickness

- Good lubrication holes and slots

- Reasonably dimensioned thrust washers

- Designed for the high-speed ETS Lima bearing

-lower precompression

- Favourable deflection angle at the connecting rod bearing

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€179.95 *

incl. VAT plus shipping costs

Available immediately (delivery time 1-3 working days*)

P For this item you get fidelity point/s

General
EAN:	4250366692609
Bearings
sizes:	15x19x20mm
Gudgeon pins
diameter:	15 mm
Crankshafts
stroke:	54 mm
thread rotor side:	M12x1,25 right-hand thread
thread drive side:	M10x1,5 right-hand thread
diameter crankwebs:	87 mm
width crankwebs:	35 mm
diameter bearing seat rotor side:	25 mm
diameter bearing seat drive side:	17 mm
diameter oil seal seat rotor side:	24 mm
diameter oil seal seat drive side:	22.7 mm
full circle crankshaft:
filling material for full circle:	steel
rotary valve crankshaft:
crankcase has to be milled:
engine casing has to be modified:
Connecting rods
length connecting rod:	105 mm
thickness connecting rod:	5 mm
diameter small end connecting rod eye:	19 mm
lubricating hole at small end bearing:	yes
diameter crankpin:	20 mm
lubricating hole at crankpin bearing:	slot
crankpin shims:	yes