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TYGA MC28 Power Up Kit        

 

It took an afternoon's work to get the humble, underpowered MC28 from 41.5hp up to 58.5hp. The following graphs show the stock MC28 against the same bike fitted with our kit.

This was all done without the HRC card. Keep reading to find out how. The major restriction of the MC28 is the ignition timing. An HRC card is required to re-time this to a more aggressive curve, but we wanted to find more power without it.The MC21 flywheel offers more advanced timing, so just by changing to this you can squeeze a couple of hp out.

However, the stock pipes are also very restrictive, with small, 30mm diameter rings welded into the headers. Throwing away the stock pipes and fitting a set of TYGA's give a major jump in power (12hp!)

Good work so far. How about taking another look at the ignition timing? The bike was then fitted again with the 21 flywheel and the TYGA pipes. More power!

The next obvious step is to fit Hi-Flo reed valves and a modified airbox, keeping the pipes and 21 flywheel in situ. A gain of another horsepower. Main Jet was increased to #155 for this test.

The final test was to fit the Carbon reeds to the existing set-up. Another small increase.

So there you have it. From 41.5hp up to 58.5hp. A gain of 17hp (41%). Remember, modifying your bike puts extra stress on all components, increasing the chance of failure and reducing the lifespan of everything from the piston rings to the sprockets. It may also make your bike illegal for road use! We advise that the base machine must be in good working condition before any changes are made, and careful jet setting should be performed at each stage.

 


The above tests should be used as a guide only. TYGA Performance accepts no responsibility for any machine damage, or personal injury or death resulting from these modifications


 

 

Parts needed as follows:

 

Show: 

Set, Exhaust Chamber, Side By Side Type, Stainless Steel, NSR250 MC28

Set, Exhaust Chamber, Side By Side Type, Stainless Steel, NSR250 MC28

Set, Exhaust Chamber, Side By Side Type, Stainless Steel, NSR250 MC28 Constructed in stainless steel, TYGA Performance combine modern technology and…

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EXCS-0005B
Quantity
2
Silencer, Aluminium Premium, Two Stroke, Assy.

Silencer, Aluminium Premium, Two Stroke, Assy.

Silencer, Aluminium Premium, Two Stroke, Assy. This aluminium two stroke silencer offers the same excellent value for money that our…

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EXSL-9005
Quantity
100+
Silencer, Carbon, Two Stroke, Assy.

Silencer, Carbon, Two Stroke, Assy.

Silencer, Carbon, Two Stroke, Assy. This high quality lightweight (0.47 kg) silencer is made from CNC machined end caps joined by…

Model
EXSL-0003
Quantity
100+
Silencer, Carbon/Kevlar, Two Stroke, Assy.

Silencer, Carbon/Kevlar, Two Stroke, Assy.

Silencer, Carbon/Kevlar, Two Stroke, Assy. This high quality lightweight silencer (0.47kg) is made from CNC machined end caps joined by…

Model
EXSL-0004
Quantity
100+
Race Airbox Lid, GRP, MC21/MC28

Race Airbox Lid, GRP, MC21/MC28

Race Airbox Lid, GRP, MC21/MC28The stock airbox is restricted by the size of the inlet holes on the lid which…

Model
BPFX-9010
Quantity
1
Race Air Box Lid, Carbon, MC21/MC28

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Race Air Box Lid, Carbon, MC21/MC28 Race Air Box Lid Carbon, MC21 The stock air box is restricted by the…

Model
BPCX-9010
Quantity
1
Hi Flo reeds, MC21/MC28, Assy.

Hi Flo reeds, MC21/MC28, Assy.

Hi Flo reeds, MC21/MC28, Assy. Kit includes: * HRC style stuffer for improved intake mixture flow. * Reed stopper lifter…

Model
TPER-0001
Quantity
5
Keihin Main Jet. Order from Left menu >By Product> Main Jet

Keihin Main Jet. Order from Left menu >By Product> Main Jet

Keihin Main Jet. Order from Left menu >By Product> Keihin Main Jet Please see our comprehensive list of keihin main…

Model
Many
Quantity
100+
Woodruff Key, Offset, 2 Degrees, NSR250

Woodruff Key, Offset, 2 Degrees, NSR250

Woodruff Key, Offset, 2 Degrees, NSR250 2 Degrees offset woodruff key for NSR250. Allows simple advance/retard of stock ignition timing. *Important* Modifying ignition…

Model
TPER-2044
Quantity
15
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