11
POWER METER SPIDER & CHAINRING
Spider model
SPM
2
R491
SPM
2
GR4C
Discipline
Road
Gravel
BCD
110 mm
110/80 mm
No. of arms
4
4
Compatible chainrings
Ridea Lami·Flow R491 series
Ridea Lami·Flow GR4C series
Chainring sizes
Double:
W0T: 50/34; 52/36;
53/39; 56/44
W2T: 48/32; 50/34;
52/36; 53/39
W3T: 50/34; 52/36;
53/39
Single:
W0T: 50t; 52t; 54t; 56t
W2T: 34t; 36t; 38t; 40t;
42t; 44t
W3T: 46t; 48t; 50t; 52t;
54t; 56t
W3T (inset 3 mm): 46t; 48t;
50t
Double:
W0T: 46/30
W2T: 46/30
Single:
W0T: 38t; 40t; 42t
W2T: 38t; 40t; 42t
Weight
519 g (170 mm; 24 mm,
TI64 spindle; w/o chainring)
523 g (170 mm; 24 mm,
TI64 spindle; w/o chainring)
Spider mount positions
When using Ridea Duo-Oval Powering chainrings: +10°
(climbing); -10° (rouleur); 0° (standard position)
SPM
2
R491
SPM
2
GR4C
