Microsoft did not officially set an expiration date on these codes, but unless the specific product is removed from the entitlement system. The Rally Expansion is still recognized by Xbox 360’s backend, so a valid, unused code should redeem successfully.
, you cannot purchase it directly through official digital channels anymore. Methods to Obtain the Expansion forza horizon 1 rally expansion pack code
Released on December 18, 2012, the Rally Expansion was the first major add-on for the Horizon series, introducing dedicated off-road stages and a co-driver system. I really want the Rally expansion but can find a code Microsoft did not officially set an expiration date