Rubber composition for the manufacture of tyres, based on one or more diene elastomers, on one or more reinforcing fillers and on a vulcanization system, characterized in that the said vulcanization system comprises one or more 1,2,4-triazine compounds chosen from the compounds of formula and where: R 1 and R 2 independently represent H, a halogen, a group chosen from alkoxy and (C 1 -C 10)alkylthio groups, or a C 1 -C 25 hydrocarbon group chosen from linear, branched or cyclic alkyl groups, aralkyl groups, alkylaryl groups and aryl groups, and optionally interrupted by one or more heteroatoms, it being possible for R 1 to form a ring with R 2, - A is chosen from -H, a group where: R' 1 is identical to R 1, R' 2 is identical to R 2, x is an integer greater than or equal to 1, preferably less than or equal to 10, more preferably less than or equal to 8 and very preferably less than or equal to 6, a group where R 3 represents a C 1 -C 18 hydrocarbon group optionally interrupted by one or more heteroatoms, preferably a CR' 3 R 4 R 5 group, where R' 3, R 4 and R 5 independently represent a C 1 -C 17 group optionally interrupted by one or more heteroatoms, y is an integer greater than or equal to 1, preferably less than or equal to 10, more preferably less than or equal to 8 and very preferably less than or equal to 6, a group where R 6 is a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, a group where R 7 is a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, a group where Y is a C 1 -C 18 hydrocarbon chain, optionally interrupted or substituted by one or more heteroatoms; R 8 is a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, a group where X is a C 1 -C 18 hydrocarbon chain, optionally interrupted or substituted by one or more heteroatoms; R 9 and R 10 independently represent a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, and a group where R 11 is H or a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, M n+ represents a metal or non-metal cation, n represents an integer varying between 1 and 4. R 1 and R 2 independently represent H, a halogen, a group chosen from alkoxy and (C 1 -C 10)alkylthio groups, or a C 1 -C 25 hydrocarbon group chosen from linear, branched or cyclic alkyl groups, aralkyl groups, alkylaryl groups and aryl groups, and optionally interrupted by one or more heteroatoms, it being possible for R 1 to form a ring with R 2, - A is chosen from -H, - A is chosen from -H, a group where: R' 1 is identical to R 1, R' 2 is identical to R 2, x is an integer greater than or equal to 1, preferably less than or equal to 10, more preferably less than or equal to 8 and very preferably less than or equal to 6, R' 1 is identical to R 1, R' 2 is identical to R 2, x is an integer greater than or equal to 1, preferably less than or equal to 10, more preferably less than or equal to 8 and very preferably less than or equal to 6, a group where R 3 represents a C 1 -C 18 hydrocarbon group optionally interrupted by one or more heteroatoms, preferably a CR' 3 R 4 R 5 group, where R' 3, R 4 and R 5 independently represent a C 1 -C 17 group optionally interrupted by one or more heteroatoms, y is an integer greater than or equal to 1, preferably less than or equal to 10, more preferably less than or equal to 8 and very preferably less than or equal to 6, a group where R 6 is a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, a group where R 7 is a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, a group where Y is a C 1 -C 18 hydrocarbon chain, optionally interrupted or substituted by one or more heteroatoms; R 8 is a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, a group where X is a C 1 -C 18 hydrocarbon chain, optionally interrupted or substituted by one or more heteroatoms; R 9 and R 10 independently represent a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms, and a group where R 11 is H or a C 1 -C 18 hydrocarbon group, optionally interrupted by one or more heteroatoms,