Nukeproof Mega Carbon Shock Size: Resolve the MK4 Page Difference
Nukeproof Mega Carbon shock size needs the exact MK4 wheel platform as well as the frame identity. The 2023 manual’s shock-upgrade section lists 230×62.5 mm for 29/297/275, but its later 275 specification lists 230×65 mm. That difference cannot be resolved by choosing the larger number. The 290 entry agrees with the upgrade section at 230×62.5 mm, providing a clearer starting point for that named platform.
Nukeproof Mega Carbon shock size: Use dimensions and mounting hardware together
Printed page 27 describes a bearing-end shock and gives front hardware of 25×8 mm and rear hardware of 30×8 mm. Copy the front and rear labels with the dimensions. A shock that matches one headline size has not necessarily matched its mounting hardware or the complete installation. The manual also allows a standard eyelet with appropriate hardware, while expressing a preference for the bearing-end arrangement.
The same section says a 230×65 mm shock can be used with a 2.5 mm stroke spacer. This is a qualified statement in a model-specific upgrade discussion, not permission to install any unmodified 65 mm-stroke shock. Ask the suspension supplier to confirm the exact shock, required configuration and frame before buying. This article supplies neither a spacer installation procedure nor instructions for opening a shock.
Keep the 275 disagreement attached to the source
On page 36, the Mega 275 Carbon table gives 230×65 mm, while the Mega 290 Carbon table gives 230×62.5 mm. Both repeat the 25×8 mm front and 30×8 mm rear hardware. Preserve the 275 conflict in the enquiry rather than silently correcting the table or assuming that all MK4 variants share one unrestricted stroke. Send the supplier the two complete entries.
Distinguish shock dimensions from the nearby travel rows. The 290 table’s 160 mm travel entry and the 275 table’s 165 mm entry are not replacement shock lengths. The photograph here shows a historical Pulse study bicycle, not either Mega platform, and cannot resolve the dimensions or modification question. Use identification from the actual Mega and its applicable documentation instead.
Ask about the tune as well as physical fit
Nukeproof explicitly directs a replacement-shock provider to reference the suspension-kinematics charts for a suitable tune. A matching size therefore does not settle every part of the purchase. Include the actual shock’s markings, known service history and the reason for changing it, so the supplier can address the entire proposal rather than merely locate a product with similar numbers.
The Nukeproof topic introduces the surrounding coverage, and the brand background distinguishes the bicycle families. For this decision, obtain an answer tied to your confirmed MK4 frame and the unresolved source entry where relevant. Keep any compatibility confirmation with the replacement details, especially if the supplied shock differs from the original unit.
FAQ
Is 230×65 mm an unqualified replacement size for every MK4?
No. Page 27 specifies a stroke-spacer qualification, and the 275 table conflicts with that section.
Which hardware dimensions are printed for front and rear?
The manual gives 25×8 mm at the front and 30×8 mm at the rear.
Does matching the dimensions settle the shock tune?
No. The manual also asks the provider to consider the Mega’s suspension kinematics.
Sources
Read the MK4 manual’s shock dimensions and hardware, including the conflicting 275 entry, before asking a suspension supplier to confirm a replacement. Printed pages 27, 36 of the 2023 Mega MK4 Carbon manual (https://cdn.shopify.com/s/files/1/0438/3296/7322/files/MY23_-_NP_-_Editorial_-_Mega_Carbon_Bike_Manual.pdf?v=1687182192), retrieved 28 October 2026, support this model-specific explanation.
Photograph credits and permissions
Photograph 1
Original title: Figure 25(b), complete bike assembly, in Analysis of Symmetrical/Asymmetrical Loading Influence of the Full-Suspension Downhill Bicycle’s Frame on the Crack Failure Formation at a Critical Point during Different Driving Scenarios and Design Improvement
Creator: Vladimír Bulej, Ivan Kuric, Milan Sága, Milan Vaško, Zuzana Ságová, Michal Bartoš and Stanislaw Legutko; individual photographer not specified
Copyright notice: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Original source URI: https://mdpi-res.com/d_attachment/symmetry/symmetry-14-00255/article_deploy/symmetry-14-00255.pdf
License / permission: CC BY 4.0 International
License / permission URI: https://creativecommons.org/licenses/by/4.0/
Modification notice: Selected photo panel(b): JPEG object687 extracted without re-encoding from the source PDF. The separately downloaded source PNG contains panels(a)+(b); it is not the delivered JPEG. No visual edits applied.