diff --git a/services/sync/modules/base_records/crypto.js b/services/sync/modules/base_records/crypto.js
index dad57111336d..c051de541cce 100644
--- a/services/sync/modules/base_records/crypto.js
+++ b/services/sync/modules/base_records/crypto.js
@@ -129,6 +129,7 @@ CryptoWrapper.prototype = {
       "id: " + this.id,
       "index: " + this.sortindex,
       "modified: " + this.modified,
+      "ttl: " + this.ttl,
       "payload: " + (this.deleted ? "DELETED" : JSON.stringify(this.cleartext)),
       "collection: " + (this.collection || "undefined")
     ].join("\n  ") + " }",
diff --git a/services/sync/modules/base_records/wbo.js b/services/sync/modules/base_records/wbo.js
index aca6083ba6e9..eb719b33764c 100644
--- a/services/sync/modules/base_records/wbo.js
+++ b/services/sync/modules/base_records/wbo.js
@@ -98,6 +98,8 @@ WBORecord.prototype = {
     let obj = {};
     for (let [key, val] in Iterator(this.data))
       obj[key] = key == "payload" ? JSON.stringify(val) : val;
+    if (this.ttl)
+      obj.ttl = this.ttl;
     return obj;
   },
 
@@ -105,6 +107,7 @@ WBORecord.prototype = {
       "id: " + this.id,
       "index: " + this.sortindex,
       "modified: " + this.modified,
+      "ttl: " + this.ttl,
       "payload: " + JSON.stringify(this.payload)
     ].join("\n  ") + " }",
 };
diff --git a/services/sync/modules/type_records/clients.js b/services/sync/modules/type_records/clients.js
index 653e043da3e3..f1e43ef8007b 100644
--- a/services/sync/modules/type_records/clients.js
+++ b/services/sync/modules/type_records/clients.js
@@ -44,12 +44,15 @@ const Cu = Components.utils;
 Cu.import("resource://services-sync/base_records/crypto.js");
 Cu.import("resource://services-sync/util.js");
 
+const CLIENTS_TTL = 1814400; // 21 days
+
 function ClientsRec(collection, id) {
   CryptoWrapper.call(this, collection, id);
 }
 ClientsRec.prototype = {
   __proto__: CryptoWrapper.prototype,
   _logName: "Record.Clients",
+  ttl: CLIENTS_TTL
 };
 
 Utils.deferGetSet(ClientsRec, "cleartext", ["name", "type", "commands"]);
diff --git a/services/sync/modules/type_records/forms.js b/services/sync/modules/type_records/forms.js
index 0ee64c98cfb1..9319937601cc 100644
--- a/services/sync/modules/type_records/forms.js
+++ b/services/sync/modules/type_records/forms.js
@@ -44,12 +44,15 @@ const Cu = Components.utils;
 Cu.import("resource://services-sync/base_records/crypto.js");
 Cu.import("resource://services-sync/util.js");
 
+const FORMS_TTL = 5184000; // 60 days
+
 function FormRec(collection, id) {
   CryptoWrapper.call(this, collection, id);
 }
 FormRec.prototype = {
   __proto__: CryptoWrapper.prototype,
   _logName: "Record.Form",
+  ttl: FORMS_TTL
 };
 
 Utils.deferGetSet(FormRec, "cleartext", ["name", "value"]);
diff --git a/services/sync/modules/type_records/history.js b/services/sync/modules/type_records/history.js
index a77e2dd2a67a..19a8d93aa9af 100644
--- a/services/sync/modules/type_records/history.js
+++ b/services/sync/modules/type_records/history.js
@@ -44,12 +44,15 @@ const Cu = Components.utils;
 Cu.import("resource://services-sync/base_records/crypto.js");
 Cu.import("resource://services-sync/util.js");
 
+const HISTORY_TTL = 5184000; // 60 days
+
 function HistoryRec(collection, id) {
   CryptoWrapper.call(this, collection, id);
 }
 HistoryRec.prototype = {
   __proto__: CryptoWrapper.prototype,
   _logName: "Record.History",
+  ttl: HISTORY_TTL
 };
 
 Utils.deferGetSet(HistoryRec, "cleartext", ["histUri", "title", "visits"]);
diff --git a/services/sync/modules/type_records/tabs.js b/services/sync/modules/type_records/tabs.js
index 1e3f8d4982b5..f35b171dfde9 100644
--- a/services/sync/modules/type_records/tabs.js
+++ b/services/sync/modules/type_records/tabs.js
@@ -44,12 +44,15 @@ const Cu = Components.utils;
 Cu.import("resource://services-sync/base_records/crypto.js");
 Cu.import("resource://services-sync/util.js");
 
+const TABS_TTL = 604800; // 7 days
+
 function TabSetRecord(collection, id) {
   CryptoWrapper.call(this, collection, id);
 }
 TabSetRecord.prototype = {
   __proto__: CryptoWrapper.prototype,
   _logName: "Record.Tabs",
+  ttl: TABS_TTL
 };
 
 Utils.deferGetSet(TabSetRecord, "cleartext", ["clientName", "tabs"]);
diff --git a/services/sync/tests/unit/test_records_wbo.js b/services/sync/tests/unit/test_records_wbo.js
index fdd4bf2c3a7d..950c43876669 100644
--- a/services/sync/tests/unit/test_records_wbo.js
+++ b/services/sync/tests/unit/test_records_wbo.js
@@ -6,6 +6,27 @@ Cu.import("resource://services-sync/resource.js");
 Cu.import("resource://services-sync/util.js");
 
 
+function test_toJSON() {
+  _("Create a record, for now without a TTL.");
+  let wbo = new WBORecord("coll", "a_record");
+  wbo.modified = 12345;
+  wbo.sortindex = 42;
+  wbo.payload = {};
+
+  _("Verify that the JSON representation contains the WBO properties, but not TTL.");
+  let json = JSON.parse(JSON.stringify(wbo));
+  do_check_eq(json.modified, 12345);
+  do_check_eq(json.sortindex, 42);
+  do_check_eq(json.payload, "{}");
+  do_check_false("ttl" in json);
+
+  _("Set a TTL, make sure it's present in the JSON representation.");
+  wbo.ttl = 30*60;
+  json = JSON.parse(JSON.stringify(wbo));
+  do_check_eq(json.ttl, 30*60);
+}
+
+
 function test_fetch() {
   let record = {id: "asdf-1234-asdf-1234",
                 modified: 2454725.98283,
@@ -55,5 +76,7 @@ function test_fetch() {
 
 function run_test() {
   initTestLogging("Trace");
+
+  test_toJSON();
   test_fetch();
 }