SPI .020 Over Bore Piston Kit for Yamaha Bravo 250 & Bravo Long Track 70.5mm

SPI .020 Over Bore Piston Kit for Yamaha Bravo 250 and Bravo Long Track

This SPI .020 over bore piston kit rebuilds the engine of a Yamaha Bravo 250 or Bravo Long Track snowmobile with a 70.5mm bore size, providing a direct OEM-style replacement.

Overview

The SPI .020 over bore piston kit is a drop-in replacement for Yamaha Bravo 250 and Bravo Long Track engines, restoring compression and performance. This 70.5mm oversized piston kit allows you to bore the cylinder to .020 over stock, saving the block and delivering reliable power for your Bravo.

Built For Performance

• Precision-machined 70.5mm piston (0.020″ oversize)
• Durable cast aluminum construction for long service life
• Includes piston rings, wrist pin, and circlips
• Designed to meet OEM specifications for Yamaha Bravo 250 and Bravo Long Track
• Oversize sizing allows reuse of cylinder block with a fresh bore

Fits These Machines

• for Yamaha Bravo 250
• for Yamaha Bravo Long Track

On-The-Job Use

• Used during top-end engine rebuilds on Bravo snowmobiles
• Ideal for restoring compression after cylinder wear
• Commonly installed during winter maintenance or engine overhaul
• Suitable for trail riding and utility snowmobiling

Specs At A Glance

Good To Know

Q: Can I use this piston kit on a standard bore cylinder? A: No, this is a 0.020″ over sized piston and requires the cylinder to be bored to 70.5mm. Always have your cylinder measured by a machine shop before ordering.

Q: What parts are included in this kit? A: The kit includes the piston, rings, wrist pin, and circlips, everything needed to rebuild one cylinder.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.