Counter-Rotated BZx4 Engine Modification – with Mounts, Clutch, & Collet | Zenoah

$775.95

The Counter-rotated Bonzi BZx4 Ultra Engine Modification comes standard with a Zenoah G260PUM engine. You can upgrade to the G290PUM or the G300PUM for an additional cost.

It adds an approximate 10-15+MPH increase over stock Zenoah engines. Proven performance and reliability (actual performance based on your boat, prop, pipe, weight, etc).

Includes: Bonzi BZX4 RACE ENGINE: raised exhaust timing and enlarged exhaust port, a reverse starter, reverse mounts, reverse clutch, and reverse integrated collet. port matched intake manifold, machined lightened and top relieved piston, two oil grooves for lubrication at high RPM, increased intake volume in jug, modified flow direction, jug base machined for increased compression, zero drag seals, Walbro WT-257 big bore carb, Bonzi “Very Cool” Water Jacket, Stainless Hardware Kit and Bonzi carb velocity stack, NGK CMR7H spark plug, and your choice of colors and shape (square or round) collet insert.

6.0HP@16,800RPM

All Bonzi modified engines are custom-built and therefore will take up to one (1) week from time of order to time of shipment. Contact us with any questions.

Collet Shape

Add BONZI Break-In Oil

Color

*Engine Model

Shipping Disclaimer: Due to the Covid-19 Pandemic, many shipments have been delayed. UPS, Fedex and USPS are currently unable to guarantee shipping dates/time frames until further notice.    Please contact us if you have any questions. (317)844-4695 We are open and processing orders as quickly as possible however, once in the hands of the shipping service we have no control over time and delivery.  Thank you for your patience and understanding. All the best, The Bonzi Sports Team  
Description

The Counter-rotated Bonzi BZx4 Ultra Engine Modification comes standard with a Zenoah G260PUM engine. You can upgrade to the G290PUM or the G300PUM for an additional cost.

It adds an approximate 10-15+MPH increase over stock Zenoah engines. Proven performance and reliability (actual performance based on your boat, prop, pipe, weight, etc).

Includes: Bonzi BZX4 RACE ENGINE: raised exhaust timing and enlarged exhaust port, a reverse starter, reverse mounts, reverse clutch, and reverse integrated collet. port matched intake manifold, machined lightened and top relieved piston, two oil grooves for lubrication at high RPM, increased intake volume in jug, modified flow direction, jug base machined for increased compression, zero drag seals, Walbro WT-257 big bore carb, Bonzi “Very Cool” Water Jacket, Stainless Hardware Kit and Bonzi carb velocity stack, NGK CMR7H spark plug, and your choice of colors and shape (square or round) collet insert.

6.0HP@16,800RPM

All Bonzi modified engines are custom-built and therefore will take up to one (1) week from time of order to time of shipment. Contact us with any questions.

Additional information
Weight 7 lbs
Dimensions 8 × 8 × 8 in
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