Para los modelos NRG 50 / NRG Extreme 50 LC / NRG MC2 50 (-1998) / NRG MC2 50 (1999-) DD / NRG MC2 50 (1999-) DT / NRG MC3 50 LC DD / NRG Power 50 LC (2005-) DD / NRG Power 50 LC (2005-) DT / NTT 50 / Quartz 50 / Zip SP 2 50 LC (2000-) / Zip SP 1 50 LC (-1999) / DNA 50 / Runner 50 (-1998) / Runner 50 (2006-) / Runner 50 (1999-2005) / Runner 50 Cat (2001-) / Runner 50 SP (-2005) / Runner 50 SP (2006-) COMPARAR CON REFERENCIA 430733 (CULATA CUADRADA)