diff --git a/CHANGELOG.md b/CHANGELOG.md
index 580d2fde7..cced5ac24 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -85,6 +85,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#1962](https://github.com/NibiruChain/nibiru/pull/1962) - chore(evm): code cleanup, unused code, typos, styles, warnings
 - [#1963](https://github.com/NibiruChain/nibiru/pull/1963) - feat(evm): Deduct a fee during the creation of a FunToken mapping. Implemented by `deductCreateFunTokenFee` inside of the `eth.evm.v1.MsgCreateFunToken` transaction.
 - [#1965](https://github.com/NibiruChain/nibiru/pull/1965) - refactor(evm): remove evm post-processing hooks
+- [#1966](https://github.com/NibiruChain/nibiru/pull/1966) - refactor(evm): clean up AnteHandler setup
 - [#1967](https://github.com/NibiruChain/nibiru/pull/1967) - feat(evm): export genesis
 - [#1968](https://github.com/NibiruChain/nibiru/pull/1968) - refactor(evm): funtoken events, cli commands and queries
 - [#1970](https://github.com/NibiruChain/nibiru/pull/1970) - refactor(evm): move evm antehandlers to separate package. Remove "gosdk/sequence_test.go", which causes a race condition in CI.
diff --git a/app/ante.go b/app/ante.go
index 0f8282d29..df8ecce92 100644
--- a/app/ante.go
+++ b/app/ante.go
@@ -11,9 +11,7 @@ import (
 
 	"github.com/NibiruChain/nibiru/app/ante"
 	"github.com/NibiruChain/nibiru/app/evmante"
-	"github.com/NibiruChain/nibiru/eth"
 	devgasante "github.com/NibiruChain/nibiru/x/devgas/v1/ante"
-	"github.com/NibiruChain/nibiru/x/evm"
 )
 
 // NewAnteHandler returns and AnteHandler that checks and increments sequence
@@ -21,25 +19,36 @@ import (
 // first signer.
 func NewAnteHandler(
 	keepers AppKeepers,
-	opts ante.AnteHandlerOptions,
+	options ante.AnteHandlerOptions,
 ) sdk.AnteHandler {
 	return func(
 		ctx sdk.Context, tx sdk.Tx, sim bool,
 	) (newCtx sdk.Context, err error) {
-		if err := opts.ValidateAndClean(); err != nil {
+		if err := options.ValidateAndClean(); err != nil {
 			return ctx, err
 		}
 
 		var anteHandler sdk.AnteHandler
-		hasExt, typeUrl := TxHasExtensions(tx)
-		if hasExt && typeUrl != "" {
-			anteHandler = AnteHandlerExtendedTx(typeUrl, keepers, opts)
-			return anteHandler(ctx, tx, sim)
+		txWithExtensions, ok := tx.(authante.HasExtensionOptionsTx)
+		if ok {
+			opts := txWithExtensions.GetExtensionOptions()
+			if len(opts) > 0 {
+				switch typeURL := opts[0].GetTypeUrl(); typeURL {
+				case "/eth.evm.v1.ExtensionOptionsEthereumTx":
+					// handle as *evmtypes.MsgEthereumTx
+					anteHandler = evmante.NewAnteHandlerEVM(options)
+				default:
+					return ctx, fmt.Errorf(
+						"rejecting tx with unsupported extension option: %s", typeURL)
+				}
+
+				return anteHandler(ctx, tx, sim)
+			}
 		}
 
 		switch tx.(type) {
 		case sdk.Tx:
-			anteHandler = NewAnteHandlerNonEVM(opts)
+			anteHandler = NewAnteHandlerNonEVM(options)
 		default:
 			return ctx, fmt.Errorf("invalid tx type (%T) in AnteHandler", tx)
 		}
@@ -47,28 +56,6 @@ func NewAnteHandler(
 	}
 }
 
-func AnteHandlerExtendedTx(
-	typeUrl string,
-	keepers AppKeepers,
-	opts ante.AnteHandlerOptions,
-) (anteHandler sdk.AnteHandler) {
-	switch typeUrl {
-	case evm.TYPE_URL_ETHEREUM_TX:
-		anteHandler = evmante.NewAnteHandlerEVM(opts)
-	case eth.TYPE_URL_DYNAMIC_FEE_TX:
-		anteHandler = NewAnteHandlerNonEVM(opts)
-	default:
-		errUnsupported := fmt.Errorf(
-			`encountered tx with unsupported extension option, "%s"`, typeUrl)
-		return func(
-			ctx sdk.Context, tx sdk.Tx, simulate bool,
-		) (newCtx sdk.Context, err error) {
-			return ctx, errUnsupported
-		}
-	}
-	return anteHandler
-}
-
 // NewAnteHandlerNonEVM: Default ante handler for non-EVM transactions.
 func NewAnteHandlerNonEVM(
 	opts ante.AnteHandlerOptions,
@@ -91,11 +78,9 @@ func NewAnteHandlerNonEVM(
 		authante.NewConsumeGasForTxSizeDecorator(opts.AccountKeeper),
 		// TODO: spike(security): Does minimum gas price of 0 pose a risk?
 		// ticket: https://github.com/NibiruChain/nibiru/issues/1916
-		authante.NewDeductFeeDecorator(
-			opts.AccountKeeper, opts.BankKeeper, opts.FeegrantKeeper, opts.TxFeeChecker),
+		authante.NewDeductFeeDecorator(opts.AccountKeeper, opts.BankKeeper, opts.FeegrantKeeper, opts.TxFeeChecker),
 		// ----------- Ante Handlers:  devgas
-		devgasante.NewDevGasPayoutDecorator(
-			opts.DevGasBankKeeper, opts.DevGasKeeper),
+		devgasante.NewDevGasPayoutDecorator(opts.DevGasBankKeeper, opts.DevGasKeeper),
 		// ----------- Ante Handlers:  Keys and signatures
 		// NOTE: SetPubKeyDecorator must be called before all signature verification decorators
 		authante.NewSetPubKeyDecorator(opts.AccountKeeper),
@@ -107,17 +92,3 @@ func NewAnteHandlerNonEVM(
 		ante.AnteDecoratorGasWanted{},
 	)
 }
-
-func TxHasExtensions(tx sdk.Tx) (hasExt bool, typeUrl string) {
-	extensionTx, ok := tx.(authante.HasExtensionOptionsTx)
-	if !ok {
-		return false, ""
-	}
-
-	extOpts := extensionTx.GetExtensionOptions()
-	if len(extOpts) == 0 {
-		return false, ""
-	}
-
-	return true, extOpts[0].GetTypeUrl()
-}
diff --git a/eth/codec.go b/eth/codec.go
index 6fd7fc346..df0e39494 100644
--- a/eth/codec.go
+++ b/eth/codec.go
@@ -28,8 +28,7 @@ const (
 
 // Transaction extension protobuf type URLs
 const (
-	TYPE_URL_WEB3_TX        = "/eth.types.v1.ExtensionOptionsWeb3Tx"
-	TYPE_URL_DYNAMIC_FEE_TX = "/eth.types.v1.ExtensionOptionDynamicFeeTx"
+	TYPE_URL_WEB3_TX = "/eth.types.v1.ExtensionOptionsWeb3Tx"
 )
 
 // RegisterInterfaces registers the tendermint concrete client-related
@@ -59,6 +58,5 @@ func RegisterInterfaces(registry codectypes.InterfaceRegistry) {
 	registry.RegisterImplementations(
 		(*sdktx.TxExtensionOptionI)(nil),
 		&ExtensionOptionsWeb3Tx{},
-		&ExtensionOptionDynamicFeeTx{},
 	)
 }
diff --git a/eth/codec_test.go b/eth/codec_test.go
index 18a7cea36..d295954cb 100644
--- a/eth/codec_test.go
+++ b/eth/codec_test.go
@@ -49,7 +49,6 @@ func (suite *CodecTestSuite) TestRegisterInterfaces() {
 			Interface: new(sdktx.TxExtensionOptionI),
 			WantImpls: []string{
 				TYPE_URL_WEB3_TX,
-				TYPE_URL_DYNAMIC_FEE_TX,
 			},
 		},
 	}
diff --git a/x/evm/codec.go b/x/evm/codec.go
index 42fec4565..a8dff5d4e 100644
--- a/x/evm/codec.go
+++ b/x/evm/codec.go
@@ -18,12 +18,6 @@ var (
 	AminoCdc = codec.NewAminoCodec(amino)
 )
 
-const (
-	// Protobuf type URL for a consensus tx holding Ethereum transaction msgs.
-	// Corresponds with [ExtensionOptionsEthereumTx].
-	TYPE_URL_ETHEREUM_TX = "/eth.evm.v1.ExtensionOptionsEthereumTx"
-)
-
 // NOTE: This is required for the GetSignBytes function
 func init() {
 	RegisterLegacyAminoCodec(amino)