This is the 1st / 2nd gear sliding sleeve (slider) with reverse ring for Fiat X1/9 (1974-late'77) and 128 (1977-79) 4-Spd transmission.
(Not applicable to 1971-76 128 model 4-Spds with spring-ring style synchronizers)
Often referred to as "reverse" slider.
24.5mm in width.
Identifying style of X1/9 4-Spd 1st/2nd/Reverse slider:
This slider's Outer teeth point Away from fork groove (center exterior groove).
Note: Later X1/9 (late'77-78) 1st/2nd/Reverse slider is 26mm in width.
With Outer teeth pointing Towards fork groove.
Fiat X1/9 4-speed (1974-late'1977) 1st/2nd/Reverse gear
128 All (1977-79) 1st/2nd/Reverse gear
Condition: USED (8 of 10)
Very good used condition.
Reverse idler engagement points still have good shape to them.