diff --git a/app/models/trust_level3_requirements.rb b/app/models/trust_level3_requirements.rb
index 2fb1671d4..2579216f8 100644
--- a/app/models/trust_level3_requirements.rb
+++ b/app/models/trust_level3_requirements.rb
@@ -95,7 +95,10 @@ class TrustLevel3Requirements
   end
 
   def min_topics_viewed
-    (TrustLevel3Requirements.num_topics_in_time_period.to_i * (SiteSetting.tl3_requires_topics_viewed.to_f / 100.0)).round
+    [
+      (TrustLevel3Requirements.num_topics_in_time_period.to_i * (SiteSetting.tl3_requires_topics_viewed.to_f / 100.0)).round,
+      SiteSetting.tl3_requires_topics_viewed_cap
+    ].min
   end
 
   def posts_read
@@ -103,7 +106,10 @@ class TrustLevel3Requirements
   end
 
   def min_posts_read
-    (TrustLevel3Requirements.num_posts_in_time_period.to_i * (SiteSetting.tl3_requires_posts_read.to_f / 100.0)).round
+    [
+      (TrustLevel3Requirements.num_posts_in_time_period.to_i * (SiteSetting.tl3_requires_posts_read.to_f / 100.0)).round,
+      SiteSetting.tl3_requires_posts_read_cap
+    ].min
   end
 
   def topics_viewed_all_time
diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index 663ea6a9b..ee9d9ebb1 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -1068,7 +1068,9 @@ en:
     tl3_requires_days_visited: "Minimum number of days that a user needs to have visited the site in the last (tl3 time period) days to qualify for promotion to trust level 3. Set higher than tl3 time period to disable promotions to tl3. (0 or higher)"
     tl3_requires_topics_replied_to: "Minimum number of topics a user needs to have replied to in the last (tl3 time period) days to qualify for promotion to trust level 3. (0 or higher)"
     tl3_requires_topics_viewed: "The percentage of topics created in the last (tl3 time period) days that a user needs to have viewed to qualify for promotion to trust level 3. (0 to 100)"
+    tl3_requires_topics_viewed_cap: "The maximum required number of topics viewed in the last (tl3 time period) days."
     tl3_requires_posts_read: "The percentage of posts created in the last (tl3 time period) days that a user needs to have viewed to qualify for promotion to trust level 3. (0 to 100)"
+    tl3_requires_posts_read_cap: "The maximum required number of posts read in the last (tl3 time period) days."
     tl3_requires_topics_viewed_all_time: "The minimum total number of topics a user must have viewed to qualify for trust level 3."
     tl3_requires_posts_read_all_time: "The minimum total number of posts a user must have read to qualify for trust level 3."
     tl3_requires_max_flagged: "User must not have had more than x posts flagged by x different users in the last (tl3 time period) days to qualify for promotion to trust level 3, where x is this setting's value. (0 or higher)"
diff --git a/config/site_settings.yml b/config/site_settings.yml
index 3f993bb21..f58e42c6a 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -708,10 +708,16 @@ trust:
     default: 25
     min: 0
     max: 100
+  tl3_requires_topics_viewed_cap:
+    default: 500
+    min: 0
   tl3_requires_posts_read:
     default: 25
     min: 0
     max: 100
+  tl3_requires_posts_read_cap:
+    default: 20000
+    min: 0
   tl3_requires_topics_viewed_all_time:
     default: 200
     min: 0
diff --git a/spec/models/trust_level3_requirements_spec.rb b/spec/models/trust_level3_requirements_spec.rb
index 764aef8ac..46e3d8999 100644
--- a/spec/models/trust_level3_requirements_spec.rb
+++ b/spec/models/trust_level3_requirements_spec.rb
@@ -35,12 +35,26 @@ describe TrustLevel3Requirements do
       expect(tl3_requirements.min_topics_viewed).to eq(23)
     end
 
+    it "min_topics_viewed is capped" do
+      SiteSetting.tl3_requires_topics_viewed = 75
+      described_class.stubs(:num_topics_in_time_period).returns(31)
+      SiteSetting.tl3_requires_topics_viewed_cap = 20
+      expect(tl3_requirements.min_topics_viewed).to eq(20)
+    end
+
     it "min_posts_read depends on site setting and number of posts created" do
       SiteSetting.stubs(:tl3_requires_posts_read).returns(66)
       described_class.stubs(:num_posts_in_time_period).returns(1234)
       expect(tl3_requirements.min_posts_read).to eq(814)
     end
 
+    it "min_posts_read is capped" do
+      SiteSetting.tl3_requires_posts_read = 66
+      described_class.stubs(:num_posts_in_time_period).returns(1234)
+      SiteSetting.tl3_requires_posts_read_cap = 600
+      expect(tl3_requirements.min_posts_read).to eq(600)
+    end
+
     it "min_topics_viewed_all_time depends on site setting" do
       SiteSetting.stubs(:tl3_requires_topics_viewed_all_time).returns(75)
       expect(tl3_requirements.min_topics_viewed_all_time).to eq(75)
@@ -243,7 +257,7 @@ describe TrustLevel3Requirements do
     end
   end
 
-  describe "requirements" do
+  context "requirements with defaults" do
 
     before do
       tl3_requirements.stubs(:min_days_visited).returns(50)