Praxis 104BCD 4 bolt 36T E-MTB MTB Chainring Wave Technology Narrow Wide Praxis Works MTB Narrow Wide Chainring 4 bolt 104BCD36T Wave TechnologyCold forged from 4130 high-grade steel, our MTN E-Rings are designed specifically for e-MTN and longer wear.THREADED - These MTN E-Rings are ‘female‘ threaded for an M8 chain ring bolt.
