Compatible with these NordicTrack MODELS: 1500i - NATL812050 1900i - NATL822050 2200 R - NTL15950 2200 R - NTL15951 2500 ARK - NTTL11510 2500 ARK - NTTL11511 2500 ARK - NTTL11512 2500 R - 831.298780 2500 R - 831.298781 2500 R - 831.298782 2500 R - 831.298783 2500 R - 831.298784 2500 R - NETL11520 2500 R - NTTL11513 2500 R - NTTL11514 3000R - NTL16950 4400R - NTL18950 4400R - NTL18951 C1800 - 831.293070 C1800 - NTL99020 C1800i - 831.293370 C1800i - NTL99030 C1800S - 831.293270 C1800S - NTTL99120 C1900 - 831.294070 C1900 - 831.294071 C1900 - 831.294072 C1900 - NTL10940 C1900 - NTL10941 C1900 - NTL10942 C2000 - 831.294270 C2000 - 831.294271 C2000 - 831.294272 C2000 - NCTL10840 C2000 - NTL10840 C2000 - NTL10841 C2000 - NTL10842 C2200 - 831.293090 C2200 - NTL11920 C2250 - NTL12840 C2250 - NTL12841 C2300 - 831.294990 C2300 - 831.294991 C2300 - 831.294992 C2300 - 831.294993 C2300 - 831.294994 C2300 - NTL12940 C2300 - NTL12941 C2300 - NTL12942 C2300 - NTL12943 C2300 - NTL12944 C2420 - 831.295110 C2420 - 831.295112 C2420 - NTL14952 E3200 - NETL819050 E3800 - 831.293160 E3800 - NETL829050 EXP 1000 - NETL09900 EXP 1000 - NETL09910 EXP 1000 - NTTL09990 EXP 1000 - NTTL09991 EXP 1000 - NTTL09992 EXP 1000 - NTTL09993 EXP 1000 - NTTL09994 EXP 1000 S - NTTL09510 EXP 1000 X - NTTL09610 EXP 1000 X - NTTL09611 EXP 1000 X - NTTL09612 EXP 1000 X - NTTL09613 EXP 1000 XI - NTTL09710 EXP 1000 XI - NTTL09711 EXP 1000 XI - NTTL09712 EXP 1000i - NTTL09900 EXP 1000i - NTTL09901 EXP 2000 - NETL11900 EXP 2000 - NETL11910 EXP 2000 - NETL11911 EXP 2000 - NTTL11990 EXP 2000 - NTTL11991 EXP 2000 - NTTL11992 And more!