Marchesini ROCK

Off-road wheels

Technical presentation

INDEX:

- SPOKES;- HUB;- RIM;- COMPARISON WITH OTHER

AFTERMARKET WHEELS;

brembo / April 22, 2023 / pg.3

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RIM SPOKES

HUB

brembo / April 22, 2023 / pg.4

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SPOKES:- Each Wheel Has Only 32 spokes for Both Front & Rear Wheels; - The Mechanical Characteristics of the Hub Spoke Connection Point Is 3

times Stronger Than For the Equivalent OE Nipple Spoked Wheels.- The Spoke Diameter at the Center is Smaller in Order to Reduce Overall

Hub Weight;- The Rock Wheel Spokes Are Completely Straight When Compared to

the Standard OE Wheel Spokes which Lose Their Stiffness during assembling whereas The Rock Straight Spokes ACTUALLY Increase the Wheel’s Stiffness By Over 30%!

- By Design The Rock Wheels Do Not Require to have their Spokes Regularly Tightened Meaning Less Maintenance and Concern For the Rider;

- The Rock Does Not Use Nipples Therefore Overall Wheel Weight Is Reduced and WheelStiffness Is Also Increased As a Direct Result.

- Dry-loc plastic is applied on the spoke thread: this special polimer creates mechanical interference removing most of the risk of the Spoke

Unwinding and becoming loose: (See Picture No. 2);- Every Rock Wheel Has Its Spokes Positioned Identically for ALL Models of

Motorcycles Covered in the Range Application List:

brembo / April 22, 2023 / pg.5

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SPOKES:

3.

2.

1.

brembo / April 22, 2023 / pg.6

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SPOKES FIXING:

brembo / April 22, 2023 / pg.7

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HUB- 5-Axis Machining Technology;

- The Rock Wheel Hubs are Lightweight When Compared to their OE / Aftermarket Equivalent Hub’s;

- The Rock Wheels By Design Are Completely Interchangeable with their OEM Counterparts: The Hub Measurements are Identical and as such The Rock Wheels are literally a «Plug & Play» Option For Quick and Easy Installation Onto the Subject Bike;

- The Rock Wheel Hub has been Designed to Give Greater Strength To The Bearing Mounting Point and The Spoke Connection Point to the Hub. This Design Resists Higher Levels of Hub Deformation Under Spoke Operating Loadings.

- The Tolerances Between the Bearing and the Hub Are More Precise;

brembo / April 22, 2023 / pg.8

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HUB DETAILS:

Rock Hub

OE Hub

brembo / April 22, 2023 / pg.9

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RIM- D.I.D. DIRT STAR RIMS;

- 5 Axis Machining Technology;

- The Rock Spoke Design Eliminates The Traditional Spoke Punch Protruding Bump Holes: this ‘Significantly Reduces’ Rim Machining Times with consequential Increase In ‘Rim Profile Precision’;

- The Rock Rims have Clean Cut Spoke Holes Giving a More Precise Machined Finish to the Rims and Reducing Overall Wheel Weight & Consequential Inertia Reduction;

- Precise Alignment of The Spokes With the Rim Inner Surface;

- Every Rock Wheel Rim Is Identical Across All Model Applications.

brembo / April 22, 2023 / pg.10

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RIM MACHINING

Rock Rim OE Rim

brembo / April 22, 2023 / pg.11

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TECHNICAL ADVANTAGES- Higher Resistance to the 3 Traditional Wheel

Stresses:

1) RADIAL impact and jumps

2) LATERAL direction changes

3) TORSIONAL braking and acceleration

- Weight reduction :

1) No Spoke Nipples

2) Extremely Lightweight Hub

3) Reduced Spokes Numbers

- Cleaning : No Dust Deposits as with Traditional Spoked Wheels Around the Spoke Nipples;

brembo / April 22, 2023 / pg.12

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WEIGHT COMPARISON

Weights are calculated NOT considering the rimMOZZO HUBRAGGI SPOKESNIPP NIPPLES

brembo / April 22, 2023 / pg.13

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WEIGHT COMPARISON

Weights are calculated NOT considering the rimMOZZO HUBRAGGI SPOKESNIPP NIPPLES

brembo / April 22, 2023 / pg.14

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WEIGHT COMPARISON

Weights are calculated NOT considering the rimMOZZO HUBRAGGI SPOKESNIPP NIPPLES

brembo / April 22, 2023 / pg.15

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WEIGHT COMPARISON

Weights are calculated NOT considering the rimMOZZO HUBRAGGI SPOKESNIPP NIPPLES