diff --git a/contrib/teamcity/builds/build-tsan.sh b/contrib/teamcity/builds/build-tsan.sh
--- a/contrib/teamcity/builds/build-tsan.sh
+++ b/contrib/teamcity/builds/build-tsan.sh
@@ -13,7 +13,9 @@
 )
 build_with_cmake --Werror --clang
 
-run_test_bitcoin "with thread sanitizer"
+# TSAN runs out of memory with the default radix_tests/insert_stress_test values
+run_test_bitcoin "with thread sanitizer" \
+  -radix_insert_stress_test_threads=16 -radix_insert_stress_test_elements=128
 
 # Libs and utils tests
 ninja check
diff --git a/src/test/main.cpp b/src/test/main.cpp
--- a/src/test/main.cpp
+++ b/src/test/main.cpp
@@ -6,8 +6,19 @@
 
 #include <util/system.h>
 
+#include <test/util/setup_common.h>
+
 #include <boost/test/unit_test.hpp>
 
+static std::set<std::string> customArguments{
+    "-testsuitename",
+    "-axionactivationtime",
+};
+
+void AddCustomArguments(const std::set<std::string> &arguments) {
+    customArguments.insert(arguments.begin(), arguments.end());
+}
+
 namespace utf = boost::unit_test::framework;
 
 /*
@@ -18,14 +29,7 @@
     std::string error;
 
     CustomArgumentsFixture() {
-        const std::string testsuitename = "-testsuitename";
-
-        const std::set<std::string> testArgs = {
-            testsuitename,
-            "-axionactivationtime",
-        };
-
-        for (const auto &arg : testArgs) {
+        for (const auto &arg : customArguments) {
             gArgs.AddArg(arg, "", ArgsManager::ALLOW_ANY,
                          OptionsCategory::HIDDEN);
         }
@@ -37,7 +41,7 @@
         }
 
         master_test_suite.p_name.value =
-            gArgs.GetArg(testsuitename, master_test_suite.p_name.value);
+            gArgs.GetArg("-testsuitename", master_test_suite.p_name.value);
     }
 
     ~CustomArgumentsFixture(){};
diff --git a/src/test/radix_tests.cpp b/src/test/radix_tests.cpp
--- a/src/test/radix_tests.cpp
+++ b/src/test/radix_tests.cpp
@@ -307,20 +307,25 @@
     CheckConstTree(mytree, false);
 }
 
-#define THREADS 128
-#define ELEMENTS 65536
+static CustomArguments insertStressTestArguments({
+    "-radix_insert_stress_test_threads",
+    "-radix_insert_stress_test_elements",
+});
 
 BOOST_AUTO_TEST_CASE(insert_stress_test) {
     typedef TestElement<uint32_t> E;
 
+    int nThreads = gArgs.GetArg("-radix_insert_stress_test_threads", 128);
+    int nElements = gArgs.GetArg("-radix_insert_stress_test_elements", 65536);
+
     RadixTree<E> mytree;
     std::atomic<uint32_t> success{0};
     std::vector<std::thread> threads;
 
-    for (int i = 0; i < THREADS; i++) {
+    for (int i = 0; i < nThreads; i++) {
         threads.push_back(std::thread([&] {
             MMIXLinearCongruentialGenerator lcg;
-            for (int j = 0; j < ELEMENTS; j++) {
+            for (int j = 0; j < nElements; j++) {
                 uint32_t v = lcg.next();
 
                 if (mytree.remove(v)) {
@@ -352,11 +357,11 @@
         t.join();
     }
 
-    BOOST_CHECK_EQUAL(success.load(), ELEMENTS);
+    BOOST_CHECK_EQUAL(success.load(), nElements);
 
     // All the elements have been inserted into the tree.
     MMIXLinearCongruentialGenerator lcg;
-    for (int i = 0; i < ELEMENTS; i++) {
+    for (int i = 0; i < nElements; i++) {
         uint32_t v = lcg.next();
         BOOST_CHECK_EQUAL(mytree.get(v)->getId(), v);
         auto ptr = RCUPtr<E>::make(v);
diff --git a/src/test/util/setup_common.h b/src/test/util/setup_common.h
--- a/src/test/util/setup_common.h
+++ b/src/test/util/setup_common.h
@@ -73,6 +73,24 @@
 
 static constexpr Amount CENT(COIN / 100);
 
+void AddCustomArguments(const std::set<std::string> &arguments);
+
+/**
+ * Instantiate a static CustomArguments instance to add custom arguments in the
+ * tests:
+ *   // In the test .cpp file
+ *   static CustomArguments argumentsForMyTest({"-foo", "-bar"});
+ *
+ * Then get the arguments from the test:
+ *   // In the test case
+ *   gArgs.getArg("-foo", 42);
+ */
+struct CustomArguments {
+    explicit CustomArguments(const std::set<std::string> &arguments) {
+        AddCustomArguments(arguments);
+    }
+};
+
 /**
  * Basic testing setup.
  * This just configures logging, data dir and chain parameters.