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RC car front bumper and nose (kick-up)

Name: RC car front bumper and nose (kick-up) dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

Why is the front of an RC car shaped with a bumper and upswept nose? · Standard part · basis: Design rules and figures from the cited sources; example geometry by Xem Studio

Also called: rc front bumper, rc car nose, rc bumper rules, foam bumper rc, rc chassis kick up, front skid plate rc, touring car foam bumper, buggy front bumper, why rc cars have bumpers, rc bumper thickness

Exact dimensions. True size, with no printing tolerance added.

sizes: 6 in table

Notes

The bumper protects the chassis and front suspension in collisions, and rules keep it non-hazardous and inside the body outline: no part may extend outside the body shell viewed from any direction (AARCMCC) and no hazardous protruding bumpers are allowed (ROAR).
EFRA fixes materials: wire bumpers 2.5-4 mm wire, sheet bumpers 2.5-6.5 mm thick, closed-cell foam up to 2 cm; 1/12 bumpers may extend 13 mm ahead of the body.
Off-road chassis sweep the front upward (kick-up) so the front rolls over obstacles; most buggies start around 25-30 deg (CompetitionX).

RC car front bumper and nose size chart

parameter	value or range	source
Wire bumper diameter	2.5-4 mm	EFRA
Sheet bumper thickness	2.5-6.5 mm	EFRA
Foam bumper thickness	up to 2 cm	EFRA
1/12 bumper forward extension	max 13 mm ahead of body; 6.5 mm beyond side	EFRA
Touring/GTP bumper	min 2.5 mm thick; nothing outside body shell	AARCMCC
Off-road kick-up start point	25-30 deg	CompetitionX

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

EFRA	EFRA Handbook 2010, Appendix 3: Electric Cars	web	Publisher's page; dimensions are facts
AARCMCC	Section 3: Electric On Road, Technical Rules (Oct 2006)	web	Publisher's page; dimensions are facts
ROAR	ROAR Rule Book 2013 (club copy)	web	Publisher's page; dimensions are facts
CompetitionX	RC Kickup Explained	web	Publisher's page; dimensions are facts

Xem scan

File coming

No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.

Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=rc-front-bumper-nose

Schematic, not to scale.