BGM Crankshaft: 58 x 107mm

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 crank webs

• Reduced engine vibration thanks to fully balancing with hidden pockets, copper and tungsten balance weights

• Lubrication of the lower con rod bearing via two large lubrication slots

• Hub pin diameter 22 mm