diff --git a/settings.gradle b/settings.gradle
index 207dd95c6..ccd7a41d0 100755
--- a/settings.gradle
+++ b/settings.gradle
@@ -7,7 +7,6 @@ include 'spectator-api',
         'spectator-ext-log4j2',
         'spectator-ext-sandbox',
         'spectator-ext-spark',
-        'spectator-reg-metrics2',
         'spectator-reg-metrics3',
         'spectator-reg-servo',
         'spectator-reg-tdigest'
diff --git a/spectator-reg-metrics2/build.gradle b/spectator-reg-metrics2/build.gradle
deleted file mode 100644
index 9a831ae9d..000000000
--- a/spectator-reg-metrics2/build.gradle
+++ /dev/null
@@ -1,5 +0,0 @@
-dependencies {
-  compile project(':spectator-api')
-  compile 'com.yammer.metrics:metrics-core:2.2.0'
-  jmh project(':spectator-api')
-}
diff --git a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsCounter.java b/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsCounter.java
deleted file mode 100644
index 9efe3da1a..000000000
--- a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsCounter.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/**
- * Copyright 2015 Netflix, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.netflix.spectator.metrics2;
-
-import com.netflix.spectator.api.Clock;
-import com.netflix.spectator.api.Counter;
-import com.netflix.spectator.api.Id;
-import com.netflix.spectator.api.Measurement;
-
-import java.util.Collections;
-
-/** Counter implementation for the metrics2 registry. */
-class MetricsCounter implements Counter {
-
-  private final Clock clock;
-  private final Id id;
-  private final com.yammer.metrics.core.Meter impl;
-
-  /** Create a new instance. */
-  MetricsCounter(Clock clock, Id id, com.yammer.metrics.core.Meter impl) {
-    this.clock = clock;
-    this.id = id;
-    this.impl = impl;
-  }
-
-  @Override public Id id() {
-    return id;
-  }
-
-  @Override public boolean hasExpired() {
-    return false;
-  }
-
-  @Override public Iterable<Measurement> measure() {
-    long now = clock.wallTime();
-    long v = impl.count();
-    return Collections.singleton(new Measurement(id, now, v));
-  }
-
-  @Override public void increment() {
-    impl.mark();
-  }
-
-  @Override public void increment(long amount) {
-    impl.mark(amount);
-  }
-
-  @Override public long count() {
-    return impl.count();
-  }
-}
diff --git a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsDistributionSummary.java b/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsDistributionSummary.java
deleted file mode 100644
index 5b2db5820..000000000
--- a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsDistributionSummary.java
+++ /dev/null
@@ -1,63 +0,0 @@
-/**
- * Copyright 2015 Netflix, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.netflix.spectator.metrics2;
-
-import com.netflix.spectator.api.Clock;
-import com.netflix.spectator.api.DistributionSummary;
-import com.netflix.spectator.api.Id;
-import com.netflix.spectator.api.Measurement;
-
-import java.util.Collections;
-
-/** Distribution summary implementation for the metric2 registry. */
-class MetricsDistributionSummary implements DistributionSummary {
-
-  private final Clock clock;
-  private final Id id;
-  private final com.yammer.metrics.core.Histogram impl;
-
-  /** Create a new instance. */
-  MetricsDistributionSummary(Clock clock, Id id, com.yammer.metrics.core.Histogram impl) {
-    this.clock = clock;
-    this.id = id;
-    this.impl = impl;
-  }
-
-  @Override public Id id() {
-    return id;
-  }
-
-  @Override public boolean hasExpired() {
-    return false;
-  }
-
-  @Override public void record(long amount) {
-    impl.update(amount);
-  }
-
-  @Override public Iterable<Measurement> measure() {
-    final long now = clock.wallTime();
-    return Collections.singleton(new Measurement(id, now, impl.mean()));
-  }
-
-  @Override public long count() {
-    return impl.count();
-  }
-
-  @Override public long totalAmount() {
-    return (long) impl.sum();
-  }
-}
diff --git a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsRegistry.java b/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsRegistry.java
deleted file mode 100644
index 82d89501b..000000000
--- a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsRegistry.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/**
- * Copyright 2015 Netflix, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.netflix.spectator.metrics2;
-
-import com.netflix.spectator.api.*;
-import com.yammer.metrics.Metrics;
-import com.yammer.metrics.core.MetricName;
-
-import java.util.concurrent.TimeUnit;
-
-/** Registry implementation that maps spectator types to the metrics2 library. */
-public class MetricsRegistry extends AbstractRegistry {
-
-  private final com.yammer.metrics.core.MetricsRegistry impl;
-
-  /** Create a new instance. */
-  public MetricsRegistry() {
-    this(Clock.SYSTEM, Metrics.defaultRegistry());
-  }
-
-  /** Create a new instance. */
-  public MetricsRegistry(Clock clock, com.yammer.metrics.core.MetricsRegistry impl) {
-    super(clock);
-    this.impl = impl;
-  }
-
-  private MetricName toMetricName(Id id) {
-    final String name = id.name();
-    final int pos = name.lastIndexOf(".");
-    if (pos != -1) {
-      final String prefix = name.substring(0, pos);
-      final String suffix = name.substring(pos + 1);
-      return new MetricName("spectator", prefix, suffix);
-    } else {
-      return new MetricName("spectator", "default", id.name());
-    }
-  }
-
-  @Override protected Counter newCounter(Id id) {
-    final MetricName name = toMetricName(id);
-    return new MetricsCounter(clock(), id, impl.newMeter(name, "calls", TimeUnit.SECONDS));
-  }
-
-  @Override protected DistributionSummary newDistributionSummary(Id id) {
-    final MetricName name = toMetricName(id);
-    return new MetricsDistributionSummary(clock(), id, impl.newHistogram(name, false));
-  }
-
-  @Override protected Timer newTimer(Id id) {
-    final MetricName name = toMetricName(id);
-    return new MetricsTimer(clock(), id, impl.newTimer(name, TimeUnit.SECONDS, TimeUnit.SECONDS));
-  }
-}
diff --git a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsTimer.java b/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsTimer.java
deleted file mode 100644
index 46b027189..000000000
--- a/spectator-reg-metrics2/src/main/java/com/netflix/spectator/metrics2/MetricsTimer.java
+++ /dev/null
@@ -1,63 +0,0 @@
-/**
- * Copyright 2015 Netflix, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.netflix.spectator.metrics2;
-
-import com.netflix.spectator.api.AbstractTimer;
-import com.netflix.spectator.api.Clock;
-import com.netflix.spectator.api.Id;
-import com.netflix.spectator.api.Measurement;
-
-import java.util.Collections;
-import java.util.concurrent.TimeUnit;
-
-/** Timer implementation for the metrics2 registry. */
-class MetricsTimer extends AbstractTimer {
-
-  private final Id id;
-  private final com.yammer.metrics.core.Timer impl;
-
-  /** Create a new instance. */
-  MetricsTimer(Clock clock, Id id, com.yammer.metrics.core.Timer impl) {
-    super(clock);
-    this.id = id;
-    this.impl = impl;
-  }
-
-  @Override public Id id() {
-    return id;
-  }
-
-  @Override public boolean hasExpired() {
-    return false;
-  }
-
-  @Override public void record(long amount, TimeUnit unit) {
-    impl.update(amount, unit);
-  }
-
-  @Override public Iterable<Measurement> measure() {
-    final long now = clock.wallTime();
-    return Collections.singleton(new Measurement(id, now, impl.meanRate()));
-  }
-
-  @Override public long count() {
-    return impl.count();
-  }
-
-  @Override public long totalTime() {
-    return (long) impl.sum();
-  }
-}
diff --git a/spectator-reg-metrics2/src/main/resources/META-INF/services/com.netflix.spectator.api.Registry b/spectator-reg-metrics2/src/main/resources/META-INF/services/com.netflix.spectator.api.Registry
deleted file mode 100644
index dc8ac67dc..000000000
--- a/spectator-reg-metrics2/src/main/resources/META-INF/services/com.netflix.spectator.api.Registry
+++ /dev/null
@@ -1 +0,0 @@
-com.netflix.spectator.metrics2.MetricsRegistry