250 Ross Forged Flat Top piston set 5.7 rod and Long Rod 292
Finally a premium forged flat top piston at a affordable price! These pistons are custom made for 12Bolt to be used in your rodded 250.
Also used with the Billet Long Rod 292
1 set of Premium low friction rings Total Seal
Spirolocs if used on floating rods
Can also be used on pressed rods. Stock type.
These are marked as 23 LBs only to be able to ship as a insured package.
The compression height of the piston is made so that only .015 is needed to be milled from the deck of engine to "Zero Deck" the engine. Stock pistons require .030-.035 to zero deck which also weakens the deck.
You will recieve 6 new pistons, pins, spirolocs, and full ring set. Shipping is 20.00 in the USA lower 48 states. Other areas email me with question. Tom@12bolt.com
True Flat top design, same as ran in the DYNO 250
250 with 9.87 compression ratio with a 70CC chamber, most chambers will measure close to 74CC and give a 9.44CR
292 with 11.4 compression ratio with a 70 CC chamber, 74CC gives 10.9CR
Piston weight is only 488 grams
Includes spiroloc retainers
Inlcudes Total Seal Brand rings 1/16 top- 1/16 2nd- 3/16 oil control