Product Information
- Specially designed to increase power & Torque.
- Suitable for all petrol MG ZR' & Rover 25's
- Manufactured from Mild Steel
The standard exhaust manifold on the ZR and 25 is very restrictive as having the catalyst built into the manifold. This Janspeed 421 manifold has been specially designed to increase power and mid range torque for all petrol models inc. ZR160
A new sports catalyst converter or catalyst replacement pipe is also required to enable fitment of this 421 manifold.
The manifold's primary pipes are 1 5/8" outside diameter, and the secondary pipes are 1 7/8" outside diameter.
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