If you're diving into a rebuild or just need to freshen up your engine, the 901-8650 ARP 86.5mm Ring Compressor is a solid choice. This little tool is designed to make your life a lot easier when you're working with piston rings. Made from durable aluminum, it’s not just lightweight but also tough enough to handle the heat of the garage without bending or warping.
The black anodized finish gives it a sleek look, and let’s be honest, it’s nice to have tools that look good while they’re getting the job done. You won’t be fumbling around with adjustments here; this compressor is straightforward and gets right to the point. Just slide it over your piston rings, and you’re ready to go—no fuss, no hassle.
Keep in mind, this is sold individually, so if you’re working on multiple pistons, you might want to grab a couple. But trust me, once you use this ring compressor, you’ll appreciate how it simplifies the whole installation process. It’s all about making that engine assembly smoother and less of a headache, and this tool does just that.
So if you’re gearing up for a project that involves 86.5mm pistons, having this ring compressor in your toolkit is a smart move. It’s reliable, easy to use, and gets the job done—what more could you ask for?
Other Part Numbers:
ARP Bolts #arp901-8650
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

ARP (Automotive Racing Products) was founded by Gary Holzapfel in 1968 when he noticed his drag-racing friends succumbing to bolt-induced engine failure as a result of poor-quality fasteners. He drew upon his expertise in the aerospace industry to develop a solution, which turned into a successful business nonetheless.
Since its inception, ARP has been engineering and perfecting a wide range of bolts, studs, nuts, and other fasteners for engines, cylinder heads, headers, wheels, and transmissions. Today, ARP remains the undisputed world leader in automotive fasteners. Racing aficionados everywhere know and recognize the ARP brand and can vouch for its quality.
What Makes ARP Bolts So Special?Located in Ventura, California, all ARP processes from raw wire to finished fasteners are conducted in-house, right here in the USA. The company continually improves its processes with strict quality control guidelines and is dedicated to producing products that are second to none. Simply put, ARP Bolts are better than the competition because of their quality materials and advanced processes.
ARP prides itself on using only top-quality materials that are above the usual “aerospace-grade” quality that other manufacturers settle for. For example, while 8740 Chromoly steel has four different grades, ARP only uses the top two, SDF and CHQ. These grades cost twice as much as the lower commercial and aircraft grades, but deliver “zero defect” quality that you can trust each and every time.
ARP Bolts are built to withstand serious racing, possess greater tensile strengths, and can survive higher stress levels than most aircraft fasteners. ARP is dedicated to creating fasteners that boast ultimate strength and durability to ensure they last race after race. Its product lineup ranges from quality high-performance OEM parts to exotic specialty hardware for IndyCar, NASCAR, NHRA drag racing, Formula 1, and even marine applications.
Equip Your Ride with ARP Bolts at Vivid RacingIf you are looking to change the fasteners on your car, you’ve come to the right place. No other brand beats out ARP Bolts in terms of strength, quality, and race-proven success. Vivid Racing is, therefore, proud to carry an extensive lineup of products from American Racing Products like bolts, fluids, sealants, hand tools, stud kits, piston sleeves, wheel bolts, and more! If you have any questions regarding the parts above, please call our specialized sales team at (480) 966-3040.