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Crankshaft -BGM Pro HP Competition 58mm stroke, 107mm conrod- Lambretta DL/GP 125cc, 175cc, 200cc, 225cc, 250cc

BGM10758N
This item is currently not available.
€289.00 *

incl. VAT plus shipping costs

The item is ordered and will be in stock soon
Bearings
sizes: 16x20x20mm
Gudgeon pins
diameter: 16 mm
Crankshafts
stroke: 58 mm
thread rotor side: M12x1,0 left-hand thread
thread drive side: M8x1,0 right-hand thread
diameter crankwebs: 95.9 mm
width crankwebs: 40.5 mm
diameter bearing seat rotor side: 25 mm
diameter bearing seat drive side: 25 mm
diameter oil seal seat rotor side: 33 mm
diameter oil seal seat drive side: 33 mm
full circle crankshaft:
filling material for full circle: steel
material balancing weights: copper, tungsten
rotary valve crankshaft:
crankcase has to be milled:
engine casing has to be modified:
Connecting rods
length connecting rod: 107 mm
thickness connecting rod: 7 mm
diameter small end connecting rod eye: 20 mm
lubricating hole at small end bearing: yes
diameter crankpin: 22 mm
lubricating hole at crankpin bearing: slot
crankpin bearing: silver cage bearing
crankpin shims: yes
Please inform me once the product is available again.
P For this item you get fidelity point/s
When good things get even better, the bgm PRO Lambretta crankshafts are now the bgm PRO...Continue reading

Description


When good things get even better, the bgm PRO Lambretta crankshafts are now the bgm PRO Competition cranks. The features that have proven themselves have remained, important technical details have been further improved.

    Improved features are:
  • Precision-ground crank pin holes on the crank webs for perfect anti twisting qualities
  • Precision-ground and coated crank pin
  • Forged connecting rod with CNC finishing
  • Hardened and precision-ground bearing surfaces and oil seal seats
  • Broad selection of stroke and connecting rod combinations
  • Quality assurance of each individual crankshaft through 100% ISO and QC certified manufacturer testing

    Remaining features are:
  • Full circle crankshaft for increased primary compression
  • Forged crankwebs
  • Reduced engine vibration thanks to fully balancing with hidden pockets, copper and tungsten balance weights
  • Lubrication of the lower conrod bearing via two large lubrication slots
  • Hub pin diameter 22 mm


There is 15 years of experience with building our Lambretta cranks. The development of this new and massively improved type has taken another three years of development work and tests to realize a shaft that offers maximum anti-twisting stability.

Team Replay has used a selection of bgm parts during the BSSO race Series in 2018. Beside some other engine parts, front disc brake and the suspension also the new and uprated cranks. Replay’s rider Darren Conneely has finished the season in Group 4 on a 2nd overall using the new crank.
 
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