.21 on-road
.21 on-road Intake and Exhaust
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ASM .21 Headers - Precision Engine Tuning for Every Track ConditionASM offers a wide range of high-p..
$40.00
ASM EFRA 2208 PIPEA21-2208Upgrade your performance with the ASM EFRA 2208 Pipe, engineered as a refi..
$100.00
ASM EFRA 2208 Pipe Combo w/ Special CoatingUpgrade your nitro setup with the ASM EFRA 2208 Pipe Comb..
$200.00
ASM INS Box FilterASM/INS-002Replacement air filter for the ASM INS Box...
$8.99
ASM Intake SilencerASM/INS-001The new ASM Intake Silencer INS-BOX set if ideal for 1/8 and 1/10 on-r..
$35.99
DIM3NSION INS Box 2025 (ERFA INS202501)10044Lower CG and lower weight INS Box with ERFA approval. Us..
$44.99
DIM3NSION INS Box 2025 Filter (3pcs)10045Replacement air filters for the DIM3NSION JP INS Box 2025. ..
$11.99
Exhaust Seal Ring .21 (10pcs)Value pack of .21 engine exhaust seal rings, 10 pieces...
$16.99
EXHAUST SEAL RING 21 (4pcs)A-01000Exhaust seal gaskets for the 21 AMS and OS engines (4pcs)..
$8.99
New
Exhaust Manifold Assembly (M2003SC)72106880
The O.S. Engines M2003SC 70mm Manifold is an aluminum e..
$45.99
SMJ Kabuto IN-LINE PIPE SPRING (Racing/6pcs)SMJ1379Inline pipe springs for 1/8 on-road racing cars. ..
$5.10
Induction Silencer72414000INS box for .12 or .21 engines made by OS...
$30.99
Induction Silencer Filter (3pcs)72414100Replacement induction silencer filters made by OS, 3 pieces ..
$17.99
Joint Spring SC Series72106042Springs to connect header to the pipe...
$8.59
SMJ Kabuto EXHAUST GASKET (for 21/4pcs)SMJ1378“High-precision, high-quality, long-life muffler gaske..
$7.65
Manifold Spring (102mm)Manifold (header) spring for .21 engines...
$6.99
