This an aftermarket Answer SA PRO performance silencer spark arrestor for a 1989 Yamaha YZ250. May be compatible with other years of Yamaha 250's but I am unsure and you must do your own research prior because I have no idea any longer what other bikes this is compatible with???? Perfect if you are restoring a vintage dirtscoot and want performance.
This Vehicle Performance Computer is a two-axis accelerometer, a performance computer that delivers quite a bit more data than any dragstrip. It measures G forces and does so in all four quadrants: acceleration, braking and left/right. It records acceleration including elapsed time to 60 feet and rollout (primarily a measure of driver reaction time and staging technique, both crucial to winning drag races); time to 330 feet, 1/8 mile, 1,000 feet and quarter-mile, plus trap speed. It also displays braking distance and rate of deceleration.
Attaches to windshield with 3 suction cup mounts
Accurate within 100 milliseconds
5.5 x 1.7 x 1.4 inches (W x H x D)
This Pro Circuit 304 silencer is for model years 2003-2014 Yamaha YZ250 two-stroke dirt bikes. The slightly longer body offers added top end performance while reducing noise output. Has brushed aluminum body and stainless steel inlet tube and end-cap. Used very few times as it was part of a large trade of parts and accessories.
Features Include:
Longer body design helps to reduce noise output
6061 T6 brushed aluminum silencer body
Stainless steel end-cap
Tig and mig welded for strength and durability
Double-walled mounting bracket(s)
Allen head screws ensure easy repacking when needed for extended product life
Made in the USA
